I bought a 55 gallon tank from someone else about 6 months ago. When I bought it the skimmer wasn't working too well.. He had a frogspawn that never looks really happy, a leather coral and a kenyi tree and mushrooms which I have slowly been taking out. I fixed the skimmer about a few months ago and my water quality has been better than it's ever been. I want to get a new lighting fixture but I only have about 260 watt total in mine now. I wanted to look into getting a few more lps corals. I want to get some that are on the easier side to grow. Any idea? Please!!