Pro Mix products are great but... peat moss is not a renewable resource and Pro Mix uses alot of peat. Better off using an organic potting mix. I see people say you need to amned a "litght mix" but how did I then grow a 7yft. plant in a 5 gallon growbag with nothing but organic potting soil and a tablespoon of Jobe's Granular Organic fertilizer? Beginners should keep it simple! KISS will never fail you! After you get some experience and want to try fancier organic mixes, go for it! But plain old organic soil will work great all by itself, which gives you time to learn proper watering, etc.
just my opinion! Have a great grow! :Sharing One: