the_real_brian
New member
I agree. Nitrates are consumed at a faster rate then the phosphate so GFO should also be run and/or increase nitrates with heavier feeding.
I had terrible problems and carbon dosing finally did it, like a miracle. You have to do it right though. Not hard or complicated, just done correctly.
I simply started dosing NaNO3 and I haven't had a PO4 problem since. I don't use GFO and I don't even carbon dose. Heavier feeding will increase NO3 and PO4, so it won't eliminate the NO3 deficit problem.