I have a 2.5 Gal tank that has 2.5 lbs. LR.,3" sand seeded with two handfuls sand from LFS. It has one 20-WATT CPF light 50/50 10,000 k, and OTB filter rated for up to a 15gal thats about 6-X turn over in the small tank. Will this be enough light and flow for a few soft corals.