you should NOT fertilize in the first two weeks of growth ... the plant carries it's own nutes for that, you can easily kill them ... once things sort themselves out, use your Miracle-Gro at 1/2 strength ... spray both sides of the leaves, ONCE a week ... spray them in the morning, or when their lights come on ... doubtful you will need to feed with your groundwater ... discontinue if the leaf tips start to turn brown ... don't over-love your plants, they do best when left alone ... :smokin: