I just purchased a couple bags of EJ amazon for the first time. I have a thread opened about it, if you get a chance it would be helpful if you stopped by. I'd like to go into your results more but I normally use black gold organic soil with multiple teas, quanos and top dressing of amendments. Along with a few liquid feeds. Enzymes, bio AG fulpower, SNS bloom. I will give a 2 week flush. First week using a sweetner(molasses or cutting edge sour D)and ph water only. Start of second week I give 1 full strength watering of groteks final flush and then 1 more watering of just water 1 last time. Last watering is 3 times the pot size. So it's a hefty one. Seems to clear most of anything out besides the left over organic matter. By that time my leaves are yellow with a healthy look to them though. I then let the plant sit in full darkness for 2 days to let any other nutrients left in the plant sink to the bottom of the roots. Hope that helps a little.