Sounds like you need a chiller or to keep them in a cool basement.marksuttonjr;4381830;4381830 said:I am sure that the hole I caught them in was cooler than the tanks they went into. The tanks I attempted to keep them in wew always room temp. The spring water that feeds the hole comes out of the ground about 100 yards away, and is usualy low 50's where it comes out, but when it is hot in the summer months I would guess that specific hole I always catch the fish in gets up in the mid 60's.