I use stump rot accelerant (Green Light brand) as a source of KNO3, Fleet for PO4, Flourish for Micros, and Flourish Iron for Fe. I dose CO2 for carbon. Am I missing any ferts.? Are there any superior sources for KNO3, Fe, PO4 or micros that I should be using instead? Please advise. Thank you...

When I set up my planted tank about 18 months ago I checked into the prices of stump remover and Fleet enema, and found that Greg Watson's agricultural grade chemicals were considerably cheaper. In addition, with Greg's chemicals, you know that you aren't getting some other stuff mixed in that you might not want to see in your tank. So, I strongly recommend Greg's KNO3 and KH2PO4. Iron is a different matter. I have no idea what the best source is for iron.