Here's my story....23,000 gallon white guinite pool. Started using Pristine Blue this season at my pool dealers suggestion b/c I battled water problems all season last year with using chlorine.

Well, I've continued to battle water problems this season too. And after doing research on PB I'm thinking I should switch to back to chlorine and after days of reading on this forum I'm very interested in BBB.

A few days ago our water was cloudy and starting to turn a little green. Also had a weird brownish film starting to cover the pool wall and floors. Took a sample in and she tested and said Phosphates were high and gave me PhosFree and a Bioguard Oxider Shock. No Iron showed up and Copper was 0.2. I poured the phosphate stuff in the first night. The next morning some of the "film" was starting to disappear and there was alot of sediment on the pool floor. The water was really turning green. Added shock last night and this morning most, not all but most, of the brownish film is gone and lots more sediment on the pool floor and the water is clear.

I take a sample back today with these readings
PH 7.4
Alkalinity 80
Copper level 0.2
No chlorine showing on my test kit as of a few minutes ago
No CYA either

I still have almost a full bottle of $41 PB left and the dealer wants me to try 2 more weeks now that the phosphates are taken care of. I hate to waste the PB and the $$ but I am also leery of putting more back in the water. I questioned her about PB ability to kill bacteria and she said it does kill but that is also what the weekly shock is for.

So......should I just ditch the PB and start with bleach? If I do this do I just need to use the bleach calculator and start adding bleach? If I add PB should I add some chlorine too?

Sorry so long but I would appreciate any suggestions or help anyone might have. Thanks so much!