Sorry to also pile on, but I had horrible algae/bacteria issues with AN PH perfect. Just about as bad as regular Mega Crop v1 & v2. Also, regular Mega Crop v2 was actually slightly BETTER at buffering PH than the AN was. I dont know if you saw the Mega Crop/PH thread, but we did a lot of testing to back those claims up.
As far as Im concerned, the tests we did in that thread show that AN’s claims about PH buffering are mostly PR BS.
My main complaint though is that it feeds algae/bacterial growth, so its not suitable for hydro use.
BUT - if its working for you, then thats great 