My next big project is going to be putting some overkill marine style filtration on my 80 gallon FW tank. I'm planning on getting a 10 gallon sump to run a protein skimmer in and some mangroves. I currently have a rubbermade sump on the tank with mangroves in it. They are by far outpacing the ones I have in my marine tank, and they're doing it without light! Ill hook up the pictures as soon as equipment starts to arrive at my house. I might build the sump tomorrow.