I know I don't have near enough. I have 2 turbos, 1 cerith, and 4 nassarius snails. I have a Yellow Watchman who does nothing for the tank, but just look cute. This may be my problem. I just developed a layer of crust on the top of my sand which seems to be under my rocks too.
I have 4 bags carib sea and 60 lbs. of sand from another persons tank they torn down. I don't know how old it was or anything about it.