Was going well until the damn tube of black aquarium caulking burst so I tried doing it with my hands with some nitrile gloves. Unfortunately I had to pump the caulk out of the hole in the side of the tube onto some paper towels and it came out horrible. Luckily it's the sump so I don't need to be super anal just annoyed as it was a nice sump kit I'll probably use a razor blade to clean it up after it cures in a few days...