Evaporation - what is a reasonable amount

[lastlight]

even my 97 has started losing a ton so my temporary topoff (5g bucket) is not even lasting me 2 days. I did have fans kick on WITH the chiller but have since unplugged the fans and told the chiller to just pickup the slack. This has reduced my evaporation some. I also lowered a powerhead ever so slightly as it was really churning the surface.

I'm manually topping off my tank downstairs with 5g everyday. I can't wait to have that on an auto topoff!