Tank Coverings?

[banditpowdercoat]

Also, there is the possible loss of Oxygen exchange with a top. More prevalent in SW tanks than FW as SW doesn't hold oxygen as well as FW.

That said, there are a lot of successfull covered tanks. Plexi is probiballly going to be the cheapest and clearest. I had 4mm glass covering one of my tanks once, and was forever cleaning it. You could see the light difference even with clean glass. Now, I just live with the evaporation. try keep tank a touch cooler? room a little warmer. That will lessen evap too

[Chase31]

iv seen black eggcrate, may not help alot but might a lil?

[Atomikk]

I highly recommend that you do not cover your tank with anything, unless is fine mesh to control jumping fish.

CO2 gas builds inside your tank all the time, and if it doesn't have a way to get out, it will lower your pH... which can be catastrophic. You need an open top so that the gases can exchange (ie CO2 for O2).