PristineBlue to BBB?

[ChuckD]

Thanks WBear.
How about the timing? How long with the sequestrant, given a 15K gal. vinyl AG with a cartridge filter, and how much before she hits it with the Cl?

[waterbear]

Thanks WBear.
How about the timing? How long with the sequestrant, given a 15K gal. vinyl AG with a cartridge filter, and how much before she hits it with the Cl?

I would use the full dose of sequesterant as per bottle directions with pH adjusted to what the manufacturer recommends. Filter for 20 hours and SLOWLY bring the chlorine levels up and then rebalance the water. Seqeusterants have a way of eating up the TA. Once the water is rebalanced it the time to shock. If the water turns green when you shock you need to add more sequesterant.

[ChuckD]

OK, sorry but I need some clarification.
You say after 20 hours of the sequestrant, slowly bring the Cl up. To what? This pool's clearly in need of a shock being a bit murky. I'm of the understanding that any Cl less than shock level at this point would be pointless. Is this just a test to see if there's residual Cu left?

Also, is the water swimmable during this?
Thanks.

(also, I'm advising her long-distance, so the simpler the better)

[waterbear]

OK, sorry but I need some clarification.
You say after 20 hours of the sequestrant, slowly bring the Cl up.
Misstyped here...meant 24 hours.
To what?
Bring it up about 1 ppm every 4-6 hours. If you bring it right up to shock levels you can destroy the sequesterants abilty to deactivate the metal and run the risk of coloring the water green. Just keep bringing up the chlorine until you reach shock level (10 ppm with no cya) and then keep it up there until the pool clears. This is the safest way. You can take the chance and shock right away but you might end up with green water and will have to start over with more sequesterant...Or you could stain the pool (if it is not already stained from the PB)
This pool's clearly in need of a shock being a bit murky. I'm of the understanding that any Cl less than shock level at this point would be pointless. Is this just a test to see if there's residual Cu left?

Also, is the water swimmable during this?
No, the water is NOT sanitized! (nor has it been if only PB was being used with NO chlorine!)
Thanks.

(also, I'm advising her long-distance, so the simpler the better)

Hope this helps.