Ok its a heat wave and the temp in tank is 82F/28C so that could be the cause. Its water change day so I will be changing out more than I usually do to get the temp down and turning off the heater. But the tank has gotten that high before and I never saw behavior like this. Basically ALL of the shrimp are swimming frantically. Its like they are new fish added to the tank and they are trying to swim away. I did a water test to be on the safe side and its all the same as ever.
So is the temp or could it be something else?
So is the temp or could it be something else?