Hydro is more exacting than soil....if the ph is not correct you WILL injure the plant so decide if being colorblind and not really reading the shades of water is going to work for you.....you AREN'T going to get the chance to make a lot of mistakes in hydro. YOU ARE HEREBY WARNED so I don't want to hear it when you try to slide on something and it comes back to bite you in the ass young man. :wtf: