I have a glass cover for my tank. The front 2/3 are glass and the back is black plastic. The light sits on the middle third, and the front third opens for access. The back third can have portions cut out for equipment such as HOB filters.
I recently replaced my HOB filer with a canister. I had cut out a section of the plastic - approx 2"X5" - where the HOB fit. Now I have the canister tubes going in and out of an opening approx 2" in dia. near one of the corners.
What would be the best way to cover up the gap where the HOB once fit? I want to make sure my fish don't jump out, and I wouldn't mind slowing evap. I'd probably prefer something that didn't look too obvious,and that would stand up well to the humidity as well as any moving/removing of the cover.
Also, any thoughts about filling up the space around the two filter tubes?
I guess I'll probably eventually get a new cover, but I might not get around to it for a while.