Well, for hydro growing, your medium is usually inert, meaning that it won't provide any nutrition by itself. So it's just a place for the roots to anchor the plant, and the nutrient solution to flow through.
cool. i got a photobucket account, trying to work it out wit my cell phone. as for the soil and lavarocks, will any small rocks do say ones found walkin on a trail? or no
cool, will do. thanks for the info. rocks have fell to #2 on my grow priority list, getting my pix from photobucket to here properly. i dont believe i have the correct code or i am placing it in the wrong place, any istruction how to properly would be greatly appreciated. til next time good burning, two fingers