Jump to content

How hot can our native shrimp handle?


NoGi

Recommended Posts

  • HOF Member

How hot is too hot for our native shrimp? Thought that with the recent heat waves it would be a good time to ask.

Link to comment
Share on other sites

I'm sure you mean water temps right?

Cause a 40degC air temperature doesn't mean the water temps are also 40degC.

 

I wouldn't have any idea personally. 

But I'd guess 40degC water temps is definitely too hot. Short bursts of 30degC might be ok. But prolonged 30+ is probably fatal for them.

 

 

Link to comment
Share on other sites

  • HOF Member

Yeah, water temps. Mine is currently sitting on 31 and they seem ok and going about as per usual.

Link to comment
Share on other sites

Depends on the species. I've caught macros out west in water that was > 30*C. I suspect that for most species, 28-30 is pushing it. 

Link to comment
Share on other sites

I think there are a few other factors aside from just the water temp that will determine if the shrimp survives the heat or not.

Things like the water flow in the tank, even if the water is warm/hot with good water movement it has a better chance of cooling down even if it is just a degree or two. Much like in a house with only the aircon on with no air movement supplied by say ceiling fans. Turning fans on at the same time as the aircon really does help make the temperature feel more pleasant.

Then there is where did that particular shrimp species/ sub species originate from? I suspect that a local glass shrimp or macro is going to do better in my tanks than if I got some from either further south or north. Northern species might handle the heat but may really suffer from cooler weather in winter.

Over crowding, we all know how over crowding can be the underlaying cause of diseases and death, so add in an extended or unaccustomed high temp and I bet the shrimp wont handle it, while a less crowded tank with other wise exact same paramaters would not have any issues.

Acclimatisation, I have found that with other species of fish that I intend to keep outdoors year round it is best to buy the young stock in spring and let them gradually acclimatise to the water temp as spring changes to summer and the eventual cooling as it drags on to winter. I do the opposite with fish I keep in tanks with heaters if they are a cool water fish like Borneo Suckers. I buy them in early winter and then let them grow accustomed to the gradually warming temp as summer approaches.

  • Like 4
Link to comment
Share on other sites

  • HOF Member

Thankfully, it's a 4ft tank that was setup for sulas so these guys are used to warmer temps and it's very under stocked. In terms of water flow it has a eheim 2217 with only noodles and media balls and 2 x otto internal power head filters. Temps have been 30 degrees the past couple of days and they don't seem stressed but if it looks like hotter days to come, I'm going to start using the A/C or throw in some ice packs to bring the temps down.

Link to comment
Share on other sites

Because I'm at work all day the option of icebricks in my tanks is not really viable (that and 40 degree heat making ice last about 5 minutes), so to try and keep my tanks cooler I have open topped tanks, usually high surface agitation from the filters, airstones bubbling 24/7. And if I am really worried I reduce my tanks lights times, so the tank is not being heated by the ambient temp as well as heat generated by the light. Almost all of my tanks also have external filters so there is no heat being generated by a motor that's submerged in the tank.

Link to comment
Share on other sites

last year over the worst of the heat a couple of my tanks sat around 30 for nearly 3 weeks peaking at 36 the riffles and macros and cherry actually berried and seemed happy. As already stated at higher temps the tanks require more oxygen and water flow cut feeding way down as the food breaks down a lot faster so can cause issues cut the light back as well to reduce algae blooms and heat  if the system is clean and healthy the shrimp will survive they probably like us don't enjoy the high temps but can tolerate them for a while if we help.  

  • Like 1
Link to comment
Share on other sites

  • 2 weeks later...

Yep I def didn't realise how serious @fishmosy was about the temp with caridina zebra, 

forgot to turn their fan on one night recently and lost 4. 

As soon as temp goes above 23c they get shaky as fishmoay said.

window AC going in their cupboard rigged to a temp controller very soon.

Even though it was at night this happened, I have still changed the lighting hours to include more light in the cooler hours of the night rather then when it's hottest in the day to help keep the system cool but still maintains nice biofilm.

I guess reaffirm what's said above, Up the oxygen as molecules are further apart the hotter it is etc.

Edited by Zebra
  • Like 1
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
  • Join Our Community!

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

  • Must Read SKF Articles

  • Posts

    • sdlTBfanUK
      I have just done the planned weekly maintenance and 10% water change and everything 'seems' to be going very well, I saw 12 blue and 9 panda shrimps so am very happy about that as there are always some hiding (and they are small) so there must be more than that at this point. Early days yet (especially with the off parameters) with the blues only been in the tank for a week and the pandas for 2 weeks. Not seen any dead ones yet and the shrimp seem happy enough and beautiful colour and pattern, all small so must be young! Parameters were TDS 159, GH 7-8, KH 1-2, PH 7 yesterday so still a bit off the usual ideal! Hopefully these figures come down slowly in time, I used pure RO water for the water change so Tds should drop 10. I will get a different PH test kit with a narrower range/increments as the one I have measures in .5 increments over a wide range which is probably a bit much. I bought these shrimp because the sellers parameters (PH 6.8) were the closest to mine so hopefully it will work out long term. I changed my zerowater filter as well, as the old one was measuring TDS 6 so passed its best. I will definitely overnight drip acclimate shrimp in the future, not that I plan any more in the forseeable future. I will add/edit photo when available, hopefully later today.
    • sdlTBfanUK
      All done now, I drip acclimated 11 blue bolts and 6 blue steel overnight and they are now in the tank so now is just wait and see if this works. 28 shrimps have now been put in and I have yet to SEE a dead one so fingers crossed! A couple of pictures of some below; I don't plan on buying any more shrimp so plan this to be a blue shrimp tank, though if it doesn't work out I have seen some female bettas I would like, but hopefully the shrimps will work out. The water parameters are still the same as before, so a bit off! I need to sort out what foods and shrimp stuff I have in the drawers and cupboard tomorrow as it's been a while, hopefully I find a shrimp lolly so I can give them one/part of those tomorrow, and it may bring as many of the shrimps out as possible.  Fingers crossed everyone...........  
    • NoGi
    • jayc
      LoL. Just look back at old posts on the forum.  
    • NoGi
      New, when i left i shut down everything. This is my first tank back. I've forgotten so much lol
×
×
  • Create New...