Buck, Heres all the chemicals you need.
KNO3 for nitrates, K2SO4 for pottasium, They also have pottasium phosphate for phosphates. They don't have a good trace supplement for planted tanks yet. I ordered KNO3 and K2SO4 and I've been using them for about 2 weeks and the difference is phenomenal. I've been using fleet enema for phosphate.
FILSTAR Pimp #2
75 gal heavily planted,50/50 Black beauty,Eco-complete substrate, Pressurised CO2 with solenoid, ph controller, AB Reactor 1000, 330 watts 9325K GE PC lighting,Ehiem Liquidoser, 2-Filstar xp3 canisters.