Completely new to the larger tanks, and am going to piece together a 100 gallon setup. Already have the tank, and lights, now I need to figure out how Im going to filter it. I plan to make my own stand, and I have two 20 gallon breeders laying around so if it would be possible to use those it would be nice. Ideally I would like to get it up and running on a strict budget, and upgrade parts down the road. So what should I keep my eyes open for as far as a used skimmer, and how could I plumb it with a couple 20g breeders?