DUDE.
IM USING THE EXACT SAME SOIL. seriously though, i mixed a 8qt bag of Miracle Grow's Organic Choice (the kind you have on the first page), with a 8qt bag of Miracle Grow's Perlite.
Doing great i must say, i had some heat issues that have since been resolved and my plants recovered within days. their looking completely healthy and you can barely see where they suffered.
I like to let the soil dry out completely, til the point the ladies leaves start bowling and then i water them that night. im using Miracle Grow All Purpose 24-8-16 nutes. and ya.
MYTH "BUSTED