Are you using the PB at bottle recc strength?

If so, I'd try cutting it in half, add some CalMag.

I think that you're seeing micro def's caused by macro overdose.

Photo's not taken under HPS would help- I can't get a good feel for how dark healthy tissue is.

What's the media?
rhizome Reviewed by rhizome on . Loosing fan leaves by the day Ok well im getting some wierd spotting on my leaves, some are just browing, some are turning yellow, some are a mix, and some just dry up and die off, water is good, ppms are good, ph is stable.... I am only using pure blend pro and liquid karma. now the liquid karma had some mold in it, or so it would seem..? not sure it might be the problem i tried to figure out what was wrong but its showing multiple symptoms. Rating: 5