after trying a few others, I have settled on the Fox Farm's products :thumbsup: ... I've grown my absolute best plants with Fox Farm exclusively ... in fact, you should have great results, just by feeding according to their 'feeding schedule' shown on their website, or their brochures (found at nurseries selling FF) ... however, I recommend using their Tiger Bloom in flower, along with the Beastie Bloom, Cha Ching, etc... the Grow Big (vegging) and Tiger Bloom (flowering) both have micro-nutrients and minerals, not in their 'extra' additives ... StinkyAttic says she doesn't like FF because of 'salts-buildup' ... I haven't seen any salt buildup with my grows, I am suspecting water differences 'may' be the culprit ... maybe it dissolves better in my water ??? I dunno, I just grow the stuff, I don't analyze it ... good luck :thumbsup: