Have a pair of these I would like to sell or use as trade towards a couple of Rena XP1s. Purchased from MsNikkiStar about 2 months ago. Work great I ran them after my filter as a way to add peat to the tank. Changing a few things around and would like to source 2 XP1s for a project. Compete minus the original boxes. $65 shipped or use towards trade.