PBF I disagree with your statement. My usualy mixes use the following at either flower or bloom.Fox Farm grow Big hydro, Tiger Bloom, Big Bloom, bonticare silicia, Fox Farm Beastie Bloomz, Cha ching, Humboldt County gravity,Humboldt County Purple Maxx, Humboldt county Bushmaster, and Humboldt Nutirents Honey for hydro and on ocassion ill swap the Honey for Botnicare Sweet berry scent. Never an issue and I usually run higher then charts list as I have used these with my strains enough to know i can max ppms at around 1800 ppm at highest points