Hi- I have a new 29 gallon saltwater tank thats been up and running now for about a week and a half. I have 30 pounds of live sand mixed in with 20 pounds of regular dry sand, 4 live rocks, 3 fresh water mollies, 2 clowns, 2 blue yellowtail damsels, 5 blue leg hermit crabs, 2red leg hermit...