Thats fine, im not debating that the temp doesnt change much
Datnoids, Platties, Kulhis, Bichirs, NZ native's, hoplos just to name a few
Iv read reports on the lake, it doesnt say that the lake is the same temp @ 0m and 2m. If there is low turnover wouldn't this cause more temp differences at 0m compared to 2m?
I know some fish live on the surface and some in other levels, fish dive down and swim up after food and away from predators, this entering diff water temps
I dont think changing 30% of the water @ 22c(into a tank of say 25) will make that much difference to the fish IMO
You have your views and i have mine, let leave it at at that shall we?