how much water does a 30 gallon evaporates daily?

[Janeallisonn]

I've got a Coralife Biocube 29 running with a Maxi 1200 and an aquaticlife skimmer as well.

Main difference between our tanks may be that I've retrofitted a Radion XR15 in place of the power compacts so I'm not generating as much heat as the standard set up with the fans.

But overall, my evaporation is negligible. I just perform weekly water changes, no top ups.