The best critter to eat old leaves and vegetation is Fresh Water Amphipods (scuds). These guys thrive on that stuff, if you can find them, there are a few sites out there that sells them and once you have a bunch growing in your tank, its also free food for your fish. QUOTE]
They also eat algae in algae scrubbers, which is not good when you are using one to filter your tank. But for eating detrius they are absolutly great. I recomend them to anyone. But they do produce a fair bit of waste although, but I suppose that is like any living creature you put in your tank. :hang: