I am a bit of a skeptic myself, but when raiderman grew with it and produced fantastic product, I decided to give it a go. I did the math on cost per gallon and it works out much cheaper that the routes I have used before. I had the AN line and it ran over $1.50+ per gallon during flower, The whole Canna line and it worked out to over $1.35+ per gallon ( Boost is crazy expensive ). Using Cal-Mag, Canna Coco A&B and Humboldt's, I have it down to under $.95 per gallon.
The root growth flat out blew away GH Root Excelurator ( expensive as well ) and all seems well so far. Will be harvesting the Afghan Kush here in a few days.
Peace and Great Grows
Asmallvoice