Did you cover the open top with paper and tape? I am planning to paint the back of my tank as well. However, I think I am going to roll it on instead. I have mine all paper/taped off, but thinking the rolled on might be less mess to deal with. I painted a piece of Lexan for my current LED holder/canopy. I can see a few places where I just didn't get enough coverage. Can't see it from an angle, but I know its there.:yes: So I'm hoping rolling it on will eliminate that type of problem.
Following along these types of threads...good info given out.:up: