so I finally got a call back from advanced today. I gave them a sample of the nutes and batch numbers to them about 10 days ago. What they had to tell me was that the nutes in question were 18 months old and were no longer any good. They tried passing the buck on my friend that owns the store, except he has the invoice when they were delivered 1 week before I purchased them. So they blamed it on a return that may have been mixed in with the brand new stock. Even though the returns go to a totaly different location. What I think is they are bringing new nutes out with the PH balancing in 2 months, They are clearing there shelves of all the old product before the new line comes out.