Help Chlorinating

[Watermom]

Take a look at this chart.

Ben's 'best guess' FC/Stabilizer table for algae free operation of OUTDOOR pools -- as of July 2003 --

Use the info in this chart to help you figure out what levels of chlorine you need to maintain in your pool based on the amount of CYA (cyanuric acid, also called stabilizer) that you have in your pool. (FC = free chlorine)

Stabilizer . . . . . . Min. FC . . . . Max FC . . . 'Shock' FC
=> 0 ppm . . . . . . . 1 ppm . . . . . 3 ppm . . . . 10 ppm
=> 10 - 20 ppm . . . . 2 ppm . . . . . 5 ppm . . . . 12 ppm
=> 30 - 50 ppm . . . . 3 ppm . . . . . 6 ppm . . . . 15 ppm
=> 60 - 90 ppm . . . . 5 ppm . . . . . 10 ppm . . .. 20 ppm
=> 100 - 200 ppm . . . 8 ppm . . . . . 15 ppm . . .. 25 ppm

With a cya of 90, you aren't shocking the pool when you raise the cl to 12.

And, as far I know, there isn't a solid form of non-stabilized chlorine.

Also, you're going to need to bring that ph down. Use some muriatic acid - add a pint at a time slowly in front of the return jet. Aim for 7.4-7.6, although anywhere 7.2-7.8 is OK.

[duraleigh]

Well, I guess we're even....I didn't answer your question about Non-CYA tabs and you didn't answer mine about how often you shock.

Watermom answered your shock level...you're not gettin' there. In fact, with your high CYA, you need to be at 25+ to shock your pool.....30 won't hurt.

I do not know of any non-stabilized pucks but you're gonna have to get off the tabs to start controlling your CYA level. It's too high now and will only increase as you use the pucks.

If your pool is clean, you should be losing 2-3ppm per day to the Sun. That means you could bring your Cl up to 14 or so and let it drift down to 8 over the next three days, then redose to 14....solving your issue with daily additions. Bleach will cause pool water pH to rise but very slowly. If you'll get your pH down to 7.2, I'll bet it'll be weeks before you have to lower it again.

[Watermom]

Bleach will cause pool water pH to rise but very slowly.

I'm going to rephrase that. Bleach MAY cause your ph to rise, but it doesn't in all pools. I use bleach exclusively and always have and it has never caused my ph to rise. In other pools it sometimes does.