Yes, clowns this is a lil faster than epoxy. With my old epoxy tank, I had to sand in between each coat. With the rubber paint you don't sand. I was getting a coat in every day or so. It stays tacky until water hits it. Then the tackiness is gone.
Yes it's a sp6. I will be using 1 specifically for the return and another for the skimmer, CaRx, biopellets and intermittent GAC/GFO use plus that one will be T-d off as a return as well