My substrate is all seashells and a little bit of crushed coral I have an over the back filter I have an undergrad The gravel filter With two powerheads I have a Three damsels I clown a peppermint shrimp And quite a few hermit crabs a couple of Mexican turbo snails I have a 4foot T5 light And 3 foot T5 light Mounted under the wooden hood My tank has going for five weeks now I cannot go too fast for that