Tank Coverings?

[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).