This is a GOOD thing you're doing!!! Finally put an end to all the bullshit fed to the newbies, and shut the been nowhere, grown nothing, know everything dumbasses up!! (OK, maybe not. But we CAN hope!!)
I did a test, similar to this, about a year ago. I compared MG soil with the time-released nutes, against the 'almighty' Fox Farms Ocean Forest, and ya know what? MG was the winner, not by a huge margin, but the results were pretty clear. The test was done in veg only, so that I could test them before adding any nutrients, using nothing but water, for about 5 weeks, then comparing the results. One thing that I did, I must mention, is that I added perlite to both soils, to equalize drainage. IMO, the only thing wrong with MG soil, is that it can retain too much water, with any pelite added. Corrected for drainge, it works excellent.
The myth that the time-released nutes are harmful, are bullshit, IMO. The problem, is that the drainage sucks, outta the bag. The soil staying too wet for too long, is the culprit, in most cases I've seen, where MG has cause problems.
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