I have no saltwater experience. I had a cichlid tank last year, but I am now in college and it was too big to bring with me. But I am moving into Fraternity house where I can set up my 29 gallon again. I have the CurrentUSA 24" 4 bulb t5h0 light and an aquac remora with maxijet 1200 and prefilter box. I am going to get a koralia either 1 or 2. Which would be better for my size tank? I have a cheap heater left over from my freshwater tank and a couple API HOB filters. Do I need to use the HOB? I wasn't planning on it.