This is my 1st grow. I'm using a stealth box with a gallon dwc hydro grow. I'm growing an AK-48 plant that for the first ten days was growing great. 3 days ago I started to notice spots on lower leaves. After reading post I realized that I was having nuts deficiencies. That was due to the fact I didn't want to over do it on the nuts fearful I would burn my babie. So I did a flush for a few hours and added the correct amout of nuts to reservoir. After 2 days I was seeing more damage to the lower leaves. So this morning I lowered my water levels bcuz I read somewhere that the roots need to breath and allow some distance between the water line and the bucket. I did that about 12hrs ago however I'm worried that I'm doing something wrong. I really need some help!!!!