Hi, I’m looking for some help with plumbing my breeding system. Looking for simple and reliable. I have 2 33 longs divided in 3 compartments and 3 10 gallon tanks all going to one sump. I have seen some systems where a pump returns water to the top tanks and drains into the middle, then to the bottom, then to sump. Or do I just get I big pump and return water to each individual tank?