I'm a first time grower. I began my 5 plant grow using Greentree Ultimate Blend, a super soil...of which I did not know at the time of sprouting. Plants are on day 16 and looking healthy. Only distilled water with varying PH of 6.5 to 6.8. Here's the question...can or should I feed during the remainder of VEG? and during BLOOM? I was planning on using General Hydroponics MICRO, GRO, & BLOOM. That was when I was thinking I was using standard soil. Any and all help is gratefully appreciated. Peace!