I have a 20 gal tank that I've recently changed over to saltwater after much research. I have 20lbs LS, 3lb LR, 2 domino damsels, 2 yellow tail damsels and a red burrowing crab. I have a sea clone 100 protein skimmer, penguin 125 hang on filter, and a small sub. pump to bottom current.
My tank...