Oh no can't have any paint chipping I guess back to the drawing boardI did a little looking around and the word is to let it cure for at least a week. Even then, it will still eventually start to chip and peel. No one reported any issues with it though, as far as it negatively impacting the fish.
I've actually decided to change tactics as far as making my XP intakes black.... I'm just going to buy new intakes that are black Harmless or not, I don't want paint chips in my filters.