It seems to me that having a planted tank with an open top is the way most people go. Why is that? I suppose that it helps with gas exchange but how much?
How many gallon tank do you have? And how many inches from the initial water fill point does it evaporate in a week?i've actually had a problem with the lid and just decided to take it off completely. my glass is pretty common, two panes of glass that is connected at the middle with a plastic strip. unfortunately the strip is rather thick and massive so it kind of blocks the light. also, as the water evaporates i find that it condenses onto the glass. i don't know if this affects the lighting but i made the ultimate choice to just leave it open. water evaporates twice as fast tho...
Is that in the Summer, or does it get to be more than that in the Summer? The reason that I ask is because Im thinking of going topless and I have about 1" to play with from the water line to a small hole that I drilled in the hob filters intake tube to prevent siphoning out of the filter when doing WC's. I change my water once a week and so it just might work.55 gallons, i wanna say like an inch and a half every 2 weeks.