The amount of salvinia(the floaters) that I sent you should suck up a lot of nitrates. They also thrive under that light. I have the same one and I didn't tend to it and after 2 months it had covered the top of my tank. You taking it gave me some more space to work with. Again let me know if you want more please, I still have a lot. I can give you more of the actual plants to help with aesthetics if you want.