Does any know what a good starting dose for iron chelate from Greg Watson's would be? I do use Greg Watson's trace, but my iron test reads 0 ppm. I have some SeaChem Iron (liquid), that I am using up at a reduced dosage to supplement and the entire tank looks better with it. I'm just not sure how the dry iron from G.W. dose will compare to SeaChem's liquid dose. My guess would be 1.2 mL, or 1/4 teaspoon, but really don't know.