They are close to the same product, and manufactured by the same company Yara I think. The feed schedule from g.h. is ok but the deal is really about the npk ratio. example 2 parts grow + 2 parts micro + 1 part bloom = N14-P7-K18 or N2-P1-K2.5 this npk is good for hydro mediums veg. a npk of 3-1-2 for soil due to minerals retained in medium . A npk of 2-3-4 is also good in early bloom 1 part grow + 1 part micro + 2 parts bloom. The grow product has ammonia nitrate use this sparingly in coco or hydro. reduce P in bloom increase K for density Hope this helps you. The fertilizer's for cannabis are a scam minerals are minerals, the ripoff of the consumer is the point. Don't go to the hobby store if you really want to do it for real. I know this site is all about the toy or hobby it's sponsored by it and I have had fun with it and learned some stuff over the year's, mostly how to get ripped off by toy maker's.