I started 24 plants in small starter cubes under fluorescent lamp array (8 lamps) without problems. At two weeks transplanted into hydroton flood and drain system under 2 600 W lamps. I'm using Advanced Nutrients "Light Feeding" program. pH levels have run a little high, but never above 7; usually around 6.25 pH. All water has been run through reverse osmosis filtering system, and I change water once a week. Plants are growing well and at 4 weeks are about 1 foot high with dense, not stretched out, growing patterns. The only problem I have is that on 5-6 plants the outer edges of leaves are yellow--probably only the last 16th of an inch. At first I thought I was burning the plants at recommended 3 foot height above plant tops and raised it to 4 feet. This seemed to help--new leaves came in fully green. But now some leaves, both new and older, show the same symptoms.
drpdrp Reviewed by drpdrp on . edges of leaves are light yellow, some plants only I started 24 plants in small starter cubes under fluorescent lamp array (8 lamps) without problems. At two weeks transplanted into hydroton flood and drain system under 2 600 W lamps. I'm using Advanced Nutrients "Light Feeding" program. pH levels have run a little high, but never above 7; usually around 6.25 pH. All water has been run through reverse osmosis filtering system, and I change water once a week. Plants are growing well and at 4 weeks are about 1 foot high with dense, not Rating: 5