You guys need to add regular gravity and give it the properties of the current black hole, then add a separate black hole. With black hole being far more massive than gravity well. and heating gasses as they fall in (like a real black hole). Also make photons MUCH harder to bend by gravity so that only black holes will bend their path significantly, while normal gravity wells will barely bend them at all. Also make only black holes destroy particles on contact, while gravity wells will act solid but indestructible like diamond.