Hey fellow grower. Grant Low has worked his ass off testing coco substrates and different nutrient products exposing their "secrete ingredients." He has remade a lot of these products for a fraction of the price and isn't hiding anything. He comes out and tells you exactly what hormones,vitamins, and other ingredients in his products. He has been testing and developing nutrient and hormone products for some time and I trust him more then any other nutrient company out there. He also sells individual salts if you like to mix dry salts and feed using your own N-P-K ect ratios. ALSO he sells hormones and tells you how to properly mix!! NO MORE NUTRIENT HYPE BULLLSHIT!!! Trust me Advanced Nutrients,Canna, and others are going to be shitting their pants once he gets his name out there and growers start using his products. These nutrients are formulated for cannabis! I have been reading his studies and books for some time now and everything he does is backed 100% by science. Check him out @ MBnutes.com. I'm sure he would give out some freebies to get you hooked.