Hello, of the aquatic utrics I have grown in the past (U. gibba) I used the basic peat on bottom of tank with layer of sand over it. But, has anyone tried leaving the tank empty, and putting peat into the filter so it will condition the water? It's not like the plants must be "planted" in the mix... so, I assume just treating the water by having the water run through the peat in the filter. Thanks for anything you have to say!!