> I'm new to Topica Master Grow. Can anyone > tell me if this is a complete fertilizer. No nitrates, and not much potassium. But it's very good for iron and other trace elements. I add TMG every day, and, if the nitrate level is low, I add KNO3, otherwise I add K2SO4. That way, I get lots of potassium, and keep the nitrate level about 5-10 ppm.