Personally, I did the black krylon fusion on white PVC thing. I even prepped, sanded the PVC, sprayed painted, waited a week b4 placing in water. Even then, the paint still chips and scratches off. It's looks ugly after a while, started trying to hide it with driftwood. After much research, you can buy black PVC up to 1 1/4" PVC. Otherwise, I just use ABS piping and fittings since my plumbing is 1 1/2". Just my 2cents, my opinion.