are you interested in a penguin bio-wheel that i used on a freshwater, i have some extra bio-balls i can give you, i got a good load of blue gravel you could have (although not many people are a fan of blue gravel) i know these are all freshwater things but maybe you do have a freshwater tank.... If you ever decide to come to the lake for any reason then you may be able to bring the tank, if you have anything extra for me i can come to your place as well.