Looking for suggestions for next step. My 1st SW tank. 12 x 24h 36L. 4" Sand bed. 40 lb live sand. Started with RO water & instant ocean. Aqua clear 300. 2 Powerheads. Added 2 pieces base rock & 2 live rock from a friends tank. Some grape algae and 2 damsels. Some green polyps on rocks. All running smoothly for about 4 weeks. Starting to see some green algae growing on sand and glass. 1 24" 50/50 flor lite. Question is what next and how soon? I want a very colorful tank with a few fish. Should I save up for better lites. What suggestions for 24" tank depth. Or should I start adding more live rock? Budget kind of limited right now but Santa is coming. Any other ideas greatly appreciated. Thanks 8)