what dry ferts should I buy??
hey everyone I have a 220gal that is planted but not heavily. I am adding co2 so that my current plants will grow(they stopped) and I will be adding more green soon. I currently use flourish as my only fert but I would like to try some of the greg watson ferts for the cost difference. My only question is I have no idea what to buy. If I read this right I think all I would need is the PMDD and the iron? should that about do it? also is it just as effective if I dose the dry ferts directly to my tank instead of making the solution? if so where do I find a dosing chart for a 220 size tank?