Been using the teachings here for 6 years or so and I am finally stumped. I'm in Va Beach and thought I'd finally clean out the pool that was uncovered and just left to basically green away over the winter. So today I dumped in 4 big jugs of Walmart super bleach which brought my chlorine level to 9.5 which is a good shock level.

A few hours later I decided to work on the ph and it was yellow or 6.8. I added 2 boxes of Borax which is what it usually takes to bump it up. Nothing. Then two more. Nothing. I bought 3 more boxes at another store and dumped them in. Nothing. I bought 6 more boxes at another store and dumped 4 in and nothing. Still yellow and sitting at 6.8. My test kit is old so I bought a new red/yellow, chlorine/ph test kit with the same yellow results so my kit is fine.

So I've added 11 boxes of Borax with no discernible bump in ph. I've also run out three stores completely of Borax. I have two left. So I said to hell with it and put in 16 oz of floc and that's brewing right now and my pump will go off overnight and I plan on vacuuming to waste tomorrow.

Any thoughts on the cause of no ph increase??? Do I need a pallet of Borax???

28,000 gallon vinyl inground pool BTW