I have had tanks for awhile, but I have switched over to saltwater tank within the last year. I have a 55 gallon saltwater tank with filter underneath, two Koralia 750 powerhead pumps, 2 T5 white lights, 2 T5 blue actinic, 10 led night lights. Have approx. 40 lbs live rock, a couple fake decorations, 2 clowns, and a couple other small fish..forget their names. I am trying to figure out what I need to do to make this a clean reef tank. I have had trouble with algae but recently got the 2 powerheads so that has helped. I have read to get a protein skimmer , but am not sure which one would be the correct option. Some people run plumbing underneath to basement or bottom of tank, this seems like a large undertaking for me but maybe in the future. Just want to get a little coral going before I start to figure out out to build the tank into the wall. Just need to get the water cleaner.