Same here. I only keep one tank in my basement. It's only a 29gal, but with a glass versa-top on it, it looses no water between the every other week water change schedule I do on it.No I have good fitting glass tops. My humidity stays at 50%, if I want it below I'll run the dehumidifier.
If I do notice the water level drop, the !@#$ canister filter is leaking again.