My thoughts exactly I am surprised I thought I would be the only one to err on the side of warmer. I mean like 2-3 degrees warmer max... But I can change 65% of my water and maintain my temp by a half degree. I am a little nutty about my water and tank lol12 Volt Man;3312421; said:hmmm..most older fish books I have seen always recommend that warmer is better than colder.
cold water slows down metabolism and can shock fish more than warm water varying by the same degree.
ie 4 degrees colder is worse on the fish than 4 degrees warmer..
in other words, if you cant match exactly you are better to add water a little warmer rather than colder.
I have always done this. a bit warmer works fine.

