Replacing my aqua 70(with sponges in it not the dumb disposal things they come with). With two of the medium ones of these. In a 20 gallon long. https://www.aquariumcoop.com/collect...29459429163077
Gonna put 90degree elbows in top to try to get a little bit more current.
Am I gonna be losing to much filtration? Or will it be close?