If your nitrates are only 1-3ppm then you need to add nitrogen, your fish are not producing enough to keep up with your plants uptake. You say your phosphates are high, how high? Test them and keep your N03/P04 levels at a 10 to 1 ratio. I would suspect that the phosphates are a lot lower in the tank then in your tap.Thanks for the help yall!
I haven't been adding nitrates directly because there are so many fish. Hard to say how many but at least 25 maybe 30, and 4 amano's and 4 ghosts. BTW even with so many fish my nitrates regulate very close to 0, maybe 1-3ppm but not even close to 10. Phosphates are high in our tap water around here.
As far as a complete fertilizer, is there anything "all in 1" that would be a better option than the stuff i'm using currently? Maybe PMDD does it even retail? Also, with 4wpg should I up the levels of my ferts compared to what's on the bottle? How important is Potassium?
I can see green spot algae on the glass. It's not overwhelming though. Does that tell you anything?