I currently have a 38 gallon reef tank approximately 2 1/2 years old. I have algae on my live rocks and I am looking for a fish to help control it. I have 1 Clark Clown, 1 yellow tang, 1 sandsifter goby, 2 turbo snails and 8 - 10 hermit crabs. My filtration includes a wet dry and a protein...