I am using the sensi grow and have been for a year. I dig it. When I feed the first time I go A, B and roots excelurator at 2.0 ec, then fresh water next time. After that I usually hit em with %50, then next time at %100. I go back and forth and sometimes just run PH 6.4 water in between the feeds. On the third feed I ad cal-mag. All the first two weeks nutes get the roots excelurator.
my .02