Tank cover or not

[tkhawaja]

I use a glass lid due to necessity. I don't have a canopy as my eventual goal is to do pendant lights from the roof, they just look better. (that's gonna take a year of saving up) I have no problem investing some time every month or so cleaning the glass. My PC lights sit a few inches above the glass top to vent for heat. I've never had it any other way so I dont know how the evaporation would vary but from a 100G + 47G sump I get .5G evaporation every day.