My experience has been that red cherry shrimp do fine in a wide range of temperatures. In the summer, tank temps were over 80 degrees F for an extended period of time with no ill effect that I could see. In the winter, they continue to do well and breed in an unheated tank even when temps get to the low 60s.
82 is fine with air pump. higher temp=faster metabolism=more active=more breeding. but there will be less oxygen so becareful. temp. shouldnt be higher than 82. IMO 80 w/ small air pump is best. there shouldnt be too much change in temperature. stable water parameters= success
I agree with Tex, higher temps result in faster growth and breeding but O2 may become a problem so make sure you have plenty of surface agitation. At some point if you keep increasing them temp the growth will slow down again but I do not know what that temp is but you should be fine with 82 for cherries.
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