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Sonnycbr
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Hi, I've been keeping red cherry shrimp only since last October and had some success in my Nano Cube. I started off with ten shrimp and now have around a hundred. I got so many that I decided to get another tank a bit bigger and to keep shrimp in there as well. I transferred around 20 shrimp to the new tank after cycling and checking the water parameters. Here's the thing, the water in my Nano is now cloudy and I can't seem to clear it. I've stopped using my tap water which has a TDS of around 430 and started using RO water. Everything thrived when the TDS was really high but now I have the cloudy water issue. The shrimp in the Nano are still very active there's loads of babies whereas the shrimp in the larger tank are slow moving and fairly lethargic. I have an active substrate in both tanks.

Should I just leave well alone with the cloudy water, I've changed my filter media, and will the shrimp liven up when they settle? They've been in for around two weeks now. Thanks for any advice.

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The 2 cloudy water I have had is Green, which is an algae bloom so the water is probably too 'rich' due to overfeeding etc, or White, which is a bacteria bloom, and that usually only happens with a new tank that is cycling. It would be a good idea to have the old and new filter media in the tank (for 2 weeks) when you change them as the new one won't have any bacteria. 

The newer tank won't be as settled as the older one so may not have much biofim? Have you reduced the feeding in the old tank to allow for the reduction in number of shrimps? Are you using zerowater and GH/KH+?

I wouldn't worry too much if you aren't losing any shrimp, they may just take a while to get used to their new home and feel safe, they feel safer with larger numbers so it makes sense that the small tank with lots of shrimp is more active. I assume the water parameters are the same in both tanks?

Simon

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Thanks Simon, the cloudiness is green and I think it is due to overfeeding. I have two filters in each tank, sponge and corner filters. I’ve stopped feeding the small tank for a few days as there’s loads of biofilm for the shrimp and it does appear to be clearing slowly. 
I’ll be patient and see how the tank develops. 
Thanks again,

Sonny

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    • sdlTBfanUK
      You may end up losing this batch entirely but then you can start completely fresh and get the aquarium set up right for the next batch of shrimp! If you do any large water changes then try and add the new water slowly, either dripper or some other way. You should get yourself a TDS meter (as JayC above), they are cheap and readily available. You should always use a GH tester kit as well with shrimps, if you do the 50% water change that should halve the GH so you should get a reading after that, or if you can get a local fish store to test it for you that will give you an idea of the GH. If your water supply is as hard as it appears it may be you will need to mull over how (or even IF) you want to keep shrimps as that may mean using RO or distilled/bottled water and buying a proper shrimp specific remineraliser? That will be quite expensive but you won't then have to mess about adding crushed coral/eggshells etc, but only you can decide whether you want to do/spend that much etc? If you live somewhere that gets a lot of rain, then you can use rain water? Also, as JayC states, you need to know what you are using/adding to the water and aquarium, ie fertilizers, rocks. Unless you have very exotic plants you shouldn't need any fertilizers. Just as a note, we have come across quite a few experienced fish keeprs that have this sort of start off issues with shrimp. Shrimp are more difficult than fish, and the aquarium and water etc need to be ready and within the required parameters before getting the shrimps. Usually people jump in, get the shrimps before everything is ready/sorted. Hopefully though you will keep at it, or if this lot die you will have another go and we can help you get it sorted?
    • jayc
      These are all classic symptoms of shrimp moulting problems.   Again, another high GH symptom. High GH not only causes harder carapace (shell), but it also makes eggs harder. When the egg is harder the male finds it more difficult to fertilise the eggs.   That's a worry if you can't get a good GH reading because that is going to be most likely issue right now for you.   Because snails don't moult.    If you dont already have a TDS meter, I suggest getting one asap. It's another test to narrow down your water parameters, and not have to trust one test by it's own - in this case the GH test kit. I would wager your water parameter is too high in dissolved minerals - likely from the tap water source, fertiliser dosing and/or any rocks/crushed corals you might have in the tank. To remedy this, you need to start doing water changes with RO, distilled or rain water immediately. I would do a 50% water change with RO water asap. Then look for sources that increase GH in the tank and eliminate it - fertilisers, rocks, crush corals, shells.    It's difficult to save a shrimp who's carapace is already too hard, but hopefully any younger shrimps will benefit from the water change and the reduced GH.   Good luck and keep us updated.
    • professionalshrimphugger
      United States. I have tested my tap water; it yields the same results. GH: ??, KH: 3, pH: 7.8. I cannot say for sure if my GH test is faulty or not, the expiration is until 2023. It's more of a twitching, then stasis. I have one shrimp that's having a hard time balancing itself, but it's swimmerets and mouth keep moving in attempt in getting back up. I allowed it to stick to my sponge filter. The tank is cycled. I used established media. Readings would not show 0 otherwise. I do use EI Dosing, half dosage recommended for a 20 gallon. It has been said on other forums that it does not affect shrimp, but I stopped dosing to isolate variables a week ago. No CO2, that's too costly for me, hah. I drip acclimated the shrimp for 2 hours, 1 drop per second. I tested for copper in my tank, nothing. Funnily enough, my mystery snails in my community tank don't seem too affected by it.
    • sdlTBfanUK
      Sorry to hear you are having a problem! Where are you based in the world? Can you test your tapwater GH/KH/PH? Best to know what the source water is, dechlorinated (if required) before you have ADDED anything. Are you sure the GH test is working and not old, or already activated/contaminated somehow? The other parameters seem ok! If the GH is as ridiculousy high as you say then I expect the shrimps would have problems molting (they may be twitching to get out of the old shell), though generally twitchy behaviour is usually down to some sort of toxic poisoning or the aquarium not being properly cycled? Are you using any plant fertiser or CO2?  Did you drip acclimate the shrimp over many hours before adding them to the aquarium? They are much more sensitive than fish to changes in water parameters etc. You could end up killing more of them by moving them so I would hold off from that at the moment!  
    • professionalshrimphugger
      Hello all, I am new to the forum, although experienced at fishkeeping, I am relatively new to shrimpkeeping. Let's start with my issue. I had started a colony of 18 juvenile cherry shrimp (Neocaridina davidi) in a 20 gallon long as of last month. I solely use tap water and change 5% per week. They are the only inhabitants alongside a single juvenile Malaysian trumpet snail. Today the numbers have been reduced to 9. The deaths did not start until the shrimp turned into adults, where they have struggled, twitching as if provoked, becoming lethargic, and eventually flipping over to their side and dying. Only the ones on the verge of death exhibit this behavior, whereas the rest simply graze on as usual. I measured my parameters today - my tank has been established for two months as of now and is densely planted. They have never bred despite being of adult size and having visible saddles. Never an issue with molting. Ammonia: 0 ppm, Nitrite: 0 ppm, Nitrate: 0-5 ppm || pH: 7.8, GH: ??, KH: 3 I cannot get a single good read off API's liquid GH test. I have dropped beyond 30+ and gave up as I knew the numbers were already extreme. The thing is, I need a temporary, inexpensive solution to keep my shrimp safe. I believe by the time I order supplies, the colony would already give. I was planning on moving the colony to a 5.5g, barren with my floating plants and mosses, using just distilled water, Seachem Equilibrium (only GH additive I own) and crushed eggshells (potential source of KH). Possibly crushed coral to substitute for the lack of any real mineral additive. I did not believe that high GH would possibly become a problem, and I am fortunate that the strugglers are still alive. If anyone has a solution to this problem, or approve of my plan of action, please let me know. TIA
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