Hello everyone, my marine tank is appropriately 2 feet in length. I'm currently using a AA protein skimmer ( those that works with an air wood ) and is thinking of upgrading to one of the Weipro protein skimmer. Which model should I buy and will the skimmer be too big for my tank? Oh ya, I heard that I'll need to buy a pump to get the skimmer working, is that true?How much will the pump cost and the skimmer cost? Thanks in advance