Not PH but I'm running ArA (X-Gels) and AlphaMax for weight training while also training for a Half Marathon in early May. I don't know if it's the systemic swelling from the ArA or the drying effect from the AlphaMax but my knees were KILLLING me!
After research (reading reviews - I don't know jack squat about the chemical ingredients), I settled on Achilles (2 caps / twice a day) and the topical spray Joint Force. It has helped alot! The Joint Force is rather pricey and I'm about out of the first bottle but I'll most likely plunk down the $$$ for another on. After that next bottle, I'll probably be close to the end of my ArA/AlphaMax run anyway so hopefully the knees will be back to normal.
At that point, I'll probably drop the Joint Force but - as of now - I really think I'll be continuing Achilles for awhile because (maybe it's in my head but) I've had other joint issues (hip and shoulder) that have improved, too.
Good luck! I hope you log it - I find the logs here incredibly helpful and interesting