I've got a twenty gallon long tank with a screen lid, and I've been laying plastic (cut-to-size either ziplock bags or heavy duty trash bags) on the top for now. I was wondering what kind of tape would work best to keep it together despite humidity? Also, I know it's harder to keep humidity in glass tanks with screen lids, but I was curious if it's only the lid that causes the problem. Would a custom-built lid eliminate the humidity challenge? Of course, it would have to allow for proper ventilation and such.