I tried AN’s PH Perfect nutes for a while because Fox Farm, and then Mega Crop, wasnt working in my hydro setup. AN didnt really work any better. Both seem to have organic components that the nasty bugs in my water just love to eat. I was unable to stabilize PH and could not keep the bacteria/algae under control - even with massive doses of copper, chlorine, beneficial bacteria and enzymes added. Nothing worked.
I finally switched over to a non-organic nute - Jacks 321, and I no longer have PH or bacteria issues.
Im convinced that any nute with organic components is a bad choice if you are doing hydro. At least for me.