Hi :wavehand:, this is my first post on this forum. I've had a fish only 30 gallon cube tank for the past 2 years and I'm looking into making it a reef tank. The only inhabitants currently in the tank are 2 maroon clowns, 3 turbo snails, and a orange dwarf hermit crab. What I'd really like to know is what are the lighting requirements for the dimensions on my tank(18in x 18in x18in). I'm looking to add mushrooms, and some polyps.