I have a question on filtration for a 180 gallon fish tank. I really don't want to buy a sump for my tank and i was wondering if i can use two aqua clear fluval power filter meant for a 110 gallon fish tank. would that mean that i would have two filters for a 220 gallon fish tank? I like this filter and has worked really well for me. I will have a big air stone and two powerheads running.