i bought the indoor growers book and ive read up on the first stages but because ive gone to soil im totally confused as it only deals in hydro's and does not touch on soil growing i have an nft system and a bubbler system but non of them will fit in my cubbord so i had to go to soil and now i am totally stuck ive lost 3 plants all ready i dont really want to lose these 2 as well. and if you look at the first pic can any one tell me why one of my plants have a yellow leaf.