I've never kept a saltwater tank before and I wanted to get some help with creating my first reef. I'd like to do corals at some point so I know I'm going to want a sump, heater, skimmer, and a light (if I'm remembering right might have forgotten something). I was wondering if anyone could send me some links on what exactly to buy, especially for the sump. I already have a 20 gallon or a 10 gallon I can use as it.