It would help if we knew more about your overall setup. Having said that, I run a marineland penguin 350 on my planted 40 breeder, with blue dream neocaridina and yellow tiger endlers, one otocinclus, and a bunch of snails. I upgraded it with all coarse sponge from aquarium co-op on the inside of the filter, and a large coarse intake sponge inside the tank. I also have a filter bag with ceramic bio rings nested on top of the sponges, at the top of each chamber, right before the water hits the bio wheels. Works great! Hardly ever have to clean it, and if you wanted to run filter floss for some reason, you could run it on top for a few hours to polish the water and then toss it. Really no need to run it all the time. Plus when you do clean it the coarse sponge rinses out very easily.