Jump to content

New Library Article - How to Combat Hydra in an Aquarium


NoGi
 Share

Recommended Posts

Hydra_oligactis.jpgAquariums make a wonderful hobby. They are soothing, interesting and can provide a lot of fun and entertainment. However, in order to make the most of your aquarium, taking proper care of it is exceptionally important. It must be maintained, and part of proper maintenance is understanding issues that can develop.

One of the side effects of improper aquarium maintenance is the development of pests, and Hydra oligactis – more commonly referred to as just hydra is one of the most dangerous. Also known as freshwater polyps, these pests hail from the Coelenterata family of aquatic invertebrates. They have a tubular body and a sticky foot located on one end and tentacles on the other end. The tentacles contain stinging cells, which the hydra uses to immobilize its’ prey.

Why Hydra are Dangerous in Aquariums

Though hydras are basic creatures that lack a brain, a respiratory system or even musculature, they are a real threat to aquariums. As mentioned, they use their stinging tentacles to immobilize their prey and are able to kill and eat fish fry and even adult fish. Additionally, they reproduce very quickly, creating buds that turn into new hydra that eventually break off on their own. And, though they do tend to stay in one place (using their sticky foot to secure them to a surface,) they can easily move around if they choose.

Given their ability to eat fish, how quickly they reproduce and that they can move about when they want, it’s easy to see why hydra are a real issue in an aquarium.

Treating Hydra in an Aquarium

Once an aquarium has infiltrated an aquarium, they can be hard to eradicate; however, getting rid of them is possible. The treatment for these pests depends on the extent of the infestation.

If the infestation is relatively small, you may actually be able to physically remove them. If they have taken up residence on plants and rocks, they can be killed by removing the plants and rocks and sock them in a solution of 10 percent bleach and 90 percent water for about 15 minutes. After soaking, rinse the plants and rocks with fresh water and let them air dry.

If you are looking for a less intrusive method of removal that will not disturb the aquarium, you can do so by introducing fish that will eat the pests. Mollies, Paradise fish and Spot (blue) Gouramis are known to favor hydra and can rid an aquarium of them.

Heat is another option that can be used to treat an infestation of hydra. With this treatment method, the fish must be removed from the tank first. Once they are removed, increase the temperature of the water to 40°C (104°F) for a few hours. This will essentially cook the hydra and kill them. Turn the temperature of the water down, clean the gravel and change the water. Ensure that the temperature of the water is safe for the fish before reintroducing them.

Chemicals and medicines can also be used to treat hydra; however, do keep in mind that they can be harmful to aquatic life. Copper Sulfate and Potassium Permanganate are two of the most common and safest options in fish only aquariums.

Also take a look at the following article regarding common medication used in aquariums:

Image credit: 

Wikipedia: Hydra oligactis


View full article

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Similar Content

    • Shrimps&Frogs
      By Shrimps&Frogs
      TL;DR - I had a shrimp become paralysed and die with no obvious red flags and stable water parameters. I found about 10 hydra and would like to know if I can treat with LCA Planaria Fix without harming my shrimp, particularly my berried shrimp and new shrimplets.
       
      Hi everyone,
      First, let me say thanks to everyone for all the info on this site, especially Jayc and sdITBfanUK for your many years of patient advice, you've already helped me more than you know!
      I am a new blue cherry shrimp keeper and everything had been going pretty great for me shrimp-wise. I have a 41L/9 imperial Gallon tank which I cycled/matured for about 6 weeks before adding shrimp (the tank cycled in 2 weeks, but I left it a bit longer). I then got 11 blue cherry shrimp 7 weeks ago and as I said, everything had been going pretty well. 5 of my females matured and berried with what looks like a lot of eggs, and the shrimp always seemed happy and normal. 
      About 1.5 weeks ago I found 1 dead male shrimp which looked almost stuck in the substrate at the back of my tank. It had turned white/pinkish by the time I found it and I have no idea how long it took for me to find. I wrote it off as everything else seemed fine. Then 2 days ago I saw what looked to be Scutariella on a few of my shrimp, including 2 of the pregnant ones. There was 1-3 little white things sticking up from their noses that seemed to move independently. So I salt dipped the affected shrimp, which cleared the obvious white things and the shrimp all seemed normal. Then yesterday I found a shed with some eggs still attached to it. I believe they were from my first female to become berried due to their colour, she had been berried for about 4 weeks. I thought that it may be from the salt dip. 
      Things got worse that evening when I found one of my shrimp upside down, apparently dead. I went to get it out of the tank and it attempted to swim around before falling back to the substrate. It looked as though its body was paralysed, but its extremities could still move. It otherwise appeared fine, and had nothing obviously wrong with it. I put it in a small container with clean, prime-treated water as I had read of some people having a similar thing happen due to either toxicity or lack of oxygen. I also topped up the tank and threw in a small sponge filter to increase aeration in case (I don't think it was that as all the other shrimp and snails were acting normally). The afflicted shrimp's movements decreased until I thought it was dead, then about 1 hour later it appeared to be increasing its movements and even flexed its tail a few times but then movement decreased again and it actually died.
      My tank parameters have been stable the whole time my shrimp have been in there, and I was wracking my brain trying to work out what could possibly have happened. Tonight I found about 10 tiny hydra in my tank and I am wondering if there is a possibility that the dead shrimp could have been stung by a hydra? Especially if she had just moulted? She may have been the one that lost the eggs, but there is another shrimp with similar markings that I have seen wandering around with no saddle, and as all my females have been either berried or saddled the last week or so, I thought that that one was probably the female that shed her eggs. There were some other moults as well though.
      My tank parameters are:
      Ammonia and Nitrite: 0
      Nitrate: 5-10ppm (this is what they are constantly, and I struggle to tell the two apart, if anything the colour was a little lighter)
      Temp: 22 celsius
      Ph: 7.2
      Gh: 8
      Kh: 3
      TDS: 210
      Phosphate: 0.25
      I use a thermometer, TDS and a Ph metre, salifert phosphate test kit and API liquid test kits for everything else. 
      I have been doing about 20% water changes once a week and slow drip the freshwater in. I use tap water (and this is what the shrimp were raised in) treated with prime. I have plants, driftwood, dragon stone, Indian almond leaf and a small piece of cuttlebone. These things have all been consistent since the beginning (I added the cuttle bone after cycling to slightly increase my Ph and its been very stable since. I use LCA shrimp safe all-in-one fertiliser at about .75 of the recommended low light dose twice per week, Seachem advance, and 1/8tsp LCA potassium sulphate added at water change. I was due to change water today, so I do not think it is that. All the other shrimp seem happy and normal. I did rearrange the tank about 2 weeks ago and got rid of some Vals that were spreading everywhere and looking scraggly and added a couple of new plants. There has been a bladder snail boom over the last week or so and brown dust and a little green spot algae on the glass.  I have been having issues with getting the plants to grow nicely, but there is still a decent amount of growth. 
      I should also mention that I get chemical triggered migraines and so there are no spray chemicals of any kind in the house, and am extremely careful of scented products and any chemical use, so I don't think anything could have gotten into the tank. I have kept frogs (who are very sensitive to chemicals) for 8 years with no mishaps.
      In good news, my first shrimplets were born today, I have seen at least two :), so it has been a roller coaster! I have some LCA Planaria fix as I found one hydra (bigger than the current ones) just before adding my shrimp. However, after removing that one I could not find any trace of more despite daily careful checking, so I held off on treating. Would it be ok to use that now? I can't seem to find what the actual ingredients are. I am worried about hurting the shrimplets and the berried shrimp, but obviously hydra are a danger to them as well. Please help :). 
      I think I put in all the necessary info, sorry for the long post, thanks for sticking with it if you kept reading :).
       
    • revolutionhope
      By revolutionhope
      It is important that we as a community are responsible as hobbyists. Recent threats include the white spot virus that has been found in prawns in Queensland and the possibility that the crayfish plague has been introduced to our country via exotic crays from North America that might host this fungus and that have immunity to it. For example entire crayfish populations in Europe have been decimated by this disease because only the North American crays have immunity.
      It is well known that many in Australia keep and breed exotic shrimps and other creatures and in most cases this is not problematic but there are exceptions and so it is necessary that we have a handy resource on the forum that discusses this topic and provides relevant links. Australia has very strict quarantine laws; although we are allowed to keep and breed a number of different shrimps in Australia the importation of shrimp species not in the "suitable specimens for import" is extremely illegal and if you are caught you will almost certainly be handed a jail sentence.
      Local fish shops will often freely take any unwanted animals (even sick ones) and there are always plenty of other hobbyists who will jump at the chance to take them as well.
      Below are some simple rules that are universally applicable -
      ? Do not release any fish or invertebrate from your aquarium to nature regardless of whether it is native to the area or came from that exact place; this is because they may have acquired a disease or parasite in your aquarium/pond and you could do much more harm than good. ? Do not allow any of your aquarium water or other contents to enter stormwater drains or go anywhere that might find its' way into a body of water e.g. creek or lake etc. The Australian government advice is to dispose of your water down the sink/toilet. ? Do not bring exotic animals into the country unless they are on the approved specimens list (link is below). ? Do not collect wild specimens unless you have checked first that you are allowed to do so. ? Do humanely euthanise your animals if/when necessary. (link is at the end of the article). ? Do enjoy keeping aquariums and treat your animals and our natural environment with the respect they deserve. Below are links to lists of noxious species and guides at a state and national level as well as links to RSPCA instructions for humane euthanisation
      Instructions for safe disposal of aquarium contents and animals and general guide to aquatic diseases -
      http://www.agriculture.gov.au/pests-diseases-weeds/aquatic/disease_watch_aquatic_animal_health_awareness/other_aquatic_biosecurity_materials National
      Guidelines for management of exotic fish trade including list of specimens suitable for import - http://www.environment.gov.au/biodiversity/wildlife-trade/exotics/exotic-fish-trade A.C.T.
      ????????
      NSW
      Guide / Intro: http://www.dpi.nsw.gov.au/fishing/pests-diseases/freshwater-pests/ornamental-fish Full list of noxious species: http://www.dpi.nsw.gov.au/fishing/pests-diseases/noxious-fish-and-marine-vegetation N.T.
      Guide / Intro: https://nt.gov.au/marine/for-all-harbour-and-boat-users/aquatic-pests-marine-and-freshwater/about-aquatic-pests-and-biosecurity List of aquatic pests: https://nt.gov.au/marine/for-all-harbour-and-boat-users/aquatic-pests-marine-and-freshwater/list-of-aquatic-pests SA
      Guide / Intro: http://pir.sa.gov.au/biosecurity/aquatics/aquatic_pests Full list of noxious species: http://pir.sa.gov.au/biosecurity/aquatics/aquatic_pests/noxious_fish_list TAS
      Tasmania has especially strict requirements regarding importation of live animals. The three links below contain lots of relevant information (Thanks to @jayc for finding these)
      http://dpipwe.tas.gov.au/biosecurity-tasmania/biosecurity/importing-animals/animals-that-can-be-imported-with-entry-requirements/freshwater-aquarium-fish http://soer.justice.tas.gov.au/2009/indicator/84/index.php https://www.ifs.tas.gov.au/about-us/fishery-management/environment-and-conservation/prohibited-activities VIC
        Guide and list of noxious aquatic species:  http://delwp.vic.gov.au/fishing-and-hunting/fisheries/marine-pests-and-diseases/noxious-aquatic-species-in-victoria QLD   Guide / Intro: https://www.daf.qld.gov.au/fisheries/pest-fish/noxious-fish Full list of aquatic pests(refer to schedule 1 part 4 through 6): https://www.legislation.qld.gov.au/LEGISLTN/CURRENT/B/BiosecurityA14.pdf WA Guide / Intro: http://www.fish.wa.gov.au/Sustainability-and-Environment/Aquatic-Biosecurity/Translocations-Moving-Live-Fish/Pages/Noxious-Banned-Fish.aspx Full list of noxious species and proposed additions list can be found here: http://www.fish.wa.gov.au/Sustainability-and-Environment/Aquatic-Biosecurity/Translocations-Moving-Live-Fish/Pages/Noxious-Banned-Fish.aspx News article reporting on an incident of illegal shrimp importation:
      http://www.couriermail.com.au/news/queensland/taiwanese-student-jailed-for-illegally-importing-crystal-red-shrimps/news-story/f735730cdafd30cfb23f319bbe29215d?sv=d06fddccb50ab7281cfc7e74da630b8f
      Euthanisation Key Points / Summary:
      Not everyone can bring themselves to end the lives of their own animals but regardless; if you deem it necessary to end the life of any tank inhabitants and they are not a highly illegal specimen then please dp ask your local retailer first if they might be willing to try to save them for you. If this is not an option then please see below links.
      Humane euthanisation of fish:
      http://kb.rspca.org.au/what-is-the-most-humane-way-to-euthanase-aquarium-fish_403.html
      Humane euthanisation of crustaceans:
      http://kb.rspca.org.au/What-is-the-most-humane-way-to-kill-crustaceans-for-human-consumption_625.html
      disease-watch-brochure.pdf
    • revolutionhope
      By revolutionhope
      It is important that we as a community are responsible as hobbyists. Recent threats include the white spot virus that has been found in prawns in Queensland and the possibility that the crayfish plague has been introduced to our country via exotic crays from North America that might host this fungus and that have immunity to it. For example entire crayfish populations in Europe have been decimated by this disease because only the North American crays have immunity.
      It is well known that many in Australia keep and breed exotic shrimps and other creatures and in most cases this is not problematic but there are exceptions and so it is necessary that we have a handy resource on the forum that discusses this topic and provides relevant links. Australia has very strict quarantine laws; although we are allowed to keep and breed a number of different shrimps in Australia the importation of shrimp species not in the "suitable specimens for import" is extremely illegal and if you are caught you will almost certainly be handed a jail sentence.
      Local fish shops will often freely take any unwanted animals (even sick ones) and there are always plenty of other hobbyists who will jump at the chance to take them as well.
      Below are some simple rules that are universally applicable -
      ? Do not release any fish or invertebrate from your aquarium to nature regardless of whether it is native to the area or came from that exact place; this is because they may have acquired a disease or parasite in your aquarium/pond and you could do much more harm than good. ? Do not allow any of your aquarium water or other contents to enter stormwater drains or go anywhere that might find its' way into a body of water e.g. creek or lake etc. The Australian government advice is to dispose of your water down the sink/toilet. ? Do not bring exotic animals into the country unless they are on the approved specimens list (link is below). ? Do not collect wild specimens unless you have checked first that you are allowed to do so. ? Do humanely euthanise your animals if/when necessary. (link is at the end of the article). ? Do enjoy keeping aquariums and treat your animals and our natural environment with the respect they deserve. Below are links to lists of noxious species and guides at a state and national level as well as links to RSPCA instructions for humane euthanisation
      Instructions for safe disposal of aquarium contents and animals and general guide to aquatic diseases -
      http://www.agriculture.gov.au/pests-diseases-weeds/aquatic/disease_watch_aquatic_animal_health_awareness/other_aquatic_biosecurity_materials National
      Guidelines for management of exotic fish trade including list of specimens suitable for import - http://www.environment.gov.au/biodiversity/wildlife-trade/exotics/exotic-fish-trade A.C.T.
      ????????
      NSW
      Guide / Intro: http://www.dpi.nsw.gov.au/fishing/pests-diseases/freshwater-pests/ornamental-fish Full list of noxious species: http://www.dpi.nsw.gov.au/fishing/pests-diseases/noxious-fish-and-marine-vegetation N.T.
      Guide / Intro: https://nt.gov.au/marine/for-all-harbour-and-boat-users/aquatic-pests-marine-and-freshwater/about-aquatic-pests-and-biosecurity List of aquatic pests: https://nt.gov.au/marine/for-all-harbour-and-boat-users/aquatic-pests-marine-and-freshwater/list-of-aquatic-pests SA
      Guide / Intro: http://pir.sa.gov.au/biosecurity/aquatics/aquatic_pests Full list of noxious species: http://pir.sa.gov.au/biosecurity/aquatics/aquatic_pests/noxious_fish_list TAS
      Tasmania has especially strict requirements regarding importation of live animals. The three links below contain lots of relevant information (Thanks to @jayc for finding these)
      http://dpipwe.tas.gov.au/biosecurity-tasmania/biosecurity/importing-animals/animals-that-can-be-imported-with-entry-requirements/freshwater-aquarium-fish http://soer.justice.tas.gov.au/2009/indicator/84/index.php https://www.ifs.tas.gov.au/about-us/fishery-management/environment-and-conservation/prohibited-activities VIC
        Guide and list of noxious aquatic species:  http://delwp.vic.gov.au/fishing-and-hunting/fisheries/marine-pests-and-diseases/noxious-aquatic-species-in-victoria QLD   Guide / Intro: https://www.daf.qld.gov.au/fisheries/pest-fish/noxious-fish Full list of aquatic pests(refer to schedule 1 part 4 through 6): https://www.legislation.qld.gov.au/LEGISLTN/CURRENT/B/BiosecurityA14.pdf WA Guide / Intro: http://www.fish.wa.gov.au/Sustainability-and-Environment/Aquatic-Biosecurity/Translocations-Moving-Live-Fish/Pages/Noxious-Banned-Fish.aspx Full list of noxious species and proposed additions list can be found here: http://www.fish.wa.gov.au/Sustainability-and-Environment/Aquatic-Biosecurity/Translocations-Moving-Live-Fish/Pages/Noxious-Banned-Fish.aspx News article reporting on an incident of illegal shrimp importation:
      http://www.couriermail.com.au/news/queensland/taiwanese-student-jailed-for-illegally-importing-crystal-red-shrimps/news-story/f735730cdafd30cfb23f319bbe29215d?sv=d06fddccb50ab7281cfc7e74da630b8f
      Euthanisation Key Points / Summary:
      Not everyone can bring themselves to end the lives of their own animals but regardless; if you deem it necessary to end the life of any tank inhabitants and they are not a highly illegal specimen then please dp ask your local retailer first if they might be willing to try to save them for you. If this is not an option then please see below links.
      Humane euthanisation of fish:
      http://kb.rspca.org.au/what-is-the-most-humane-way-to-euthanase-aquarium-fish_403.html
      Humane euthanisation of crustaceans:
      http://kb.rspca.org.au/What-is-the-most-humane-way-to-kill-crustaceans-for-human-consumption_625.html
      disease-watch-brochure.pdf

      View full article
    • NoGi
      By NoGi
      Planaria is a species of flatworm from the Turbellaria class and is the name for a member of the genus Planaria that is a part of the family Planariidae. It also often refers to the genus Dugesia.
      These free-living flatworms have three layers of tissues including an ectoderm, a mesoderm and an endoderm. These three layers of tissues are classified into both organs and organ systems, making flatworms the simplest animals that feature mesoderrmic layers and organ-system levels. It should be noted that flatworms do not have a body cavity, therefore they are acoelomates.
      The majority of planarians are freshwater worms that inhabit ponds and streams. However, there are terrestrial and marine species of flatworms, too. Unfortunately for those who have aquariums may find that their aquarium has been plagued by planera, and they can be really problematic.
      How Planaria Invade Aquariums
      Planaria are a common pest in freshwater aquariums. In freshwater aquariums that house shrimp, planaria often develop as a result of overfeeding. In freshwater aquariums that house other species of fish, they can develop as a result of dirty substrate. When there is either too much uneaten food in an aquarium, or the substrate in the aquarium is not kept clean, the ideal environment for these pests is created. Planaria thrive in these environments, as they consume small shrimps and fish fry.
      Are Planaria Dangerous to Fish?
      Planaria will not put the fish in an infested aquarium in danger; however, they are very unsightly and can detract from the beauty of a tank. They also are a tell-tale sign of poor tank hygiene and maintenance. If the population of planaria grows to large levels, there is a chance that they could impact the health of the fish that live in the aquarium.
      How to Treat a Planaria Infestation
      The best way to treat a planaria infestation is avoiding one in the first place. How can you do that? - By not overfeeding your fish and/or shrimp, and by making sure that you properly clean the tank on a regular basis. When cleaning the tank, it is important to clean all surfaces, including the substrate, in order to prevent these pests from developing.
      If an infestation of planaria does occur, there are several treatments available. Some of the most common treatment options include:
      Treating the tank with a shrimp friendly chemical dewormer Thoroughly vacuuming the substrate in the tank and performing a 30 to 50 percent partial water change. Minimize the amount of food being placed in the tank and performing water changes weekly while stirring the substrate. Partially changing the water on a constant basis when the tank is overcrowded. Using planaria traps The following article also provides some treatment advice: 
       

      View full article
    • NoGi
      By NoGi
      Planaria is a species of flatworm from the Turbellaria class and is the name for a member of the genus Planaria that is a part of the family Planariidae. It also often refers to the genus Dugesia.
      These free-living flatworms have three layers of tissues including an ectoderm, a mesoderm and an endoderm. These three layers of tissues are classified into both organs and organ systems, making flatworms the simplest animals that feature mesoderrmic layers and organ-system levels. It should be noted that flatworms do not have a body cavity, therefore they are acoelomates.
      The majority of planarians are freshwater worms that inhabit ponds and streams. However, there are terrestrial and marine species of flatworms, too. Unfortunately for those who have aquariums may find that their aquarium has been plagued by planera, and they can be really problematic.
      How Planaria Invade Aquariums
      Planaria are a common pest in freshwater aquariums. In freshwater aquariums that house shrimp, planaria often develop as a result of overfeeding. In freshwater aquariums that house other species of fish, they can develop as a result of dirty substrate. When there is either too much uneaten food in an aquarium, or the substrate in the aquarium is not kept clean, the ideal environment for these pests is created. Planaria thrive in these environments, as they consume small shrimps and fish fry.
      Are Planaria Dangerous to Fish?
      Planaria will not put the fish in an infested aquarium in danger; however, they are very unsightly and can detract from the beauty of a tank. They also are a tell-tale sign of poor tank hygiene and maintenance. If the population of planaria grows to large levels, there is a chance that they could impact the health of the fish that live in the aquarium.
      How to Treat a Planaria Infestation
      The best way to treat a planaria infestation is avoiding one in the first place. How can you do that? - By not overfeeding your fish and/or shrimp, and by making sure that you properly clean the tank on a regular basis. When cleaning the tank, it is important to clean all surfaces, including the substrate, in order to prevent these pests from developing.
      If an infestation of planaria does occur, there are several treatments available. Some of the most common treatment options include:
      Treating the tank with a shrimp friendly chemical dewormer Thoroughly vacuuming the substrate in the tank and performing a 30 to 50 percent partial water change. Minimize the amount of food being placed in the tank and performing water changes weekly while stirring the substrate. Partially changing the water on a constant basis when the tank is overcrowded. Using planaria traps The following article also provides some treatment advice: 
       
  • Join Our Community!

    Register today, ask questions and share your shrimp and fish tank experiences with us!

  • Must Read SKF Articles

  • Posts

    • jayc
      @fred-koi, great photos. But sorry to hear you have issues with your shrimp. What shrimp is this?  It's showing signs of a bacterial infection. Are these brownish spots circled in red normally there?   How long have you had these shrimp? Bought recently? What is your water parameters like? Temperature too, please. Bacteria do better in warmer water, so make sure your tank is cooled.   Separate any shrimp that are showing signs like this shrimp - inflamed mandibles, and brown spots. If you are brave enough to want to further treat these shrimp, have a look at the treatments for "Rust Disease" in the Disease and Diagnosis thread. No guarantee we will save this shrimp, but you can give it a go.   
    • fred-koi
      Hello, I have been experiencing a mortality problem for several months. I realize that there is a problem on the mandibles the shrimp is weak eats little then the shrimp dies. Do you have an idea ? THANK YOU
    • Avctasi
      Thank you both for your help, my newer tank that doesn’t have anything does have stratum and is heavily planted (some carpet plants like Monte Carlo, anubis, java ferns), parameters are good the only issue is the temp change.  My other tank where they are housed currently has sand, river stone pebbles, and a bunch of assorted plants (java moss, cabomba, ludwigs etc)  I haven’t thought of doing tiger shrimps but I may go into that route instead if this doesn’t work for crystals. Thank you guys again!  
    • sdlTBfanUK
      This is 'INSANE' and what happens when you get carried away in this hobby! PLEASE DO NOT TRY THIS AT HOME WITHOUT CONSULTING YOUR  PSYCHIATRIST FIRST! https://www.youtube.com/watch?v=xKH1ABcN6-g I would not want his electricity or water bills, let alone all the cost of the equipment.  
    • sdlTBfanUK
      Putting the crystal shrimp in with neocaridina (cherr) means the setup will benefit one type more than the other and it looks like the tank is better suited to neocaridina. Neocaridina are more robust anyway, caridina are a lot more sensitive and therefore harder to keep. The parameters quoted are definitely off for caridina and better suited to the neocariidina! I'm sure that that is the reason for the deaths. You shouldn't need a heater if the house sits arount 74F (and it is unlikely to get so cold that it would kill your shrimp, especially with the other heat sources in the room) and the crystals would be ok at that sort of temperature, though the 80F is getting a bit warm for them, whereas neocaridina would be less affected by that higher temperature. Of course you also need to bear in mind how hot it will get during a really hot spell as even if they are doing well normally, if you even get a few days of over 80+ (in the aquarium though, not necessarily room temperature) that could wipe them out. You could try tiger shrimps as they are almost as tough and robust as cherry shrimps and require similar water parameters, and give a bit of variety? I'm not sure that I would try the caridina in your position due to the difficulty of keeping them and the extra costs involved, when it probably won't work?  
×
×
  • Create New...