So I Bought some N-P-K. Now what?
I just bought some flourish brand NPK ferts and flourish comprehensive plant supplement. I know that my tank needs K after every water change. I have the targeted amount of phosphates which is .5 ppm(tested by my seachem phospate kit). One problem I have is my nitrates read 0ppm. I believe it needs to be at 5ppm or so. How do I raise it? Do I use the flourish nitrogen and count on my filter to turn into nitrates? If not, then what do I use the nitrogen for? THanks for taking a look at my newbie question. =]