The Medicine Man
Head Hydro Honcho
My first thoughts are to follow their directions. My second thoughts are to start out adding 300ppm or so to your base PPM of your water. Your plants will do just fine I'm sure, and if there are any deficiencies, you'll see them and can correct them. But, I think you'll find yourself to be just fine with a seedling adding 200-300ppm of nutrients and then up it to around 500ppm when you have a fwe leaf sets.
