I have 2 tanks I will be setting up on sump filtration (125 gallon & 155 gallon). For freshwater, are most of you running baffles or more of an open setup? I have a spare 30b & 55 that I plan to use. Will most likely be housing central or South American cichlids moderately stocked in the 125 & Bichirs & Dats in the 155.