Cant hold chlorine

[herrmanncr]

Wife took sample to pool store cause I can't be there to test. Here are results:
FC - 10
TC - 10
CC - 0
CH - 268
PH - 7.3
ALK - 113
CYA - 65
SAT Index - .10

They want to swim so I said add 1gal, wait 1hr and swim. I'll test and treat when I get home.

[aylad]

Those numbers look fine to me--I would swim in it with no problem. Great job!

Janet

[herrmanncr]

All you guys. Will test when I get home and adjust as needed and post #'s. Thanks!

[herrmanncr]

Think I need to shock to 20 or just maintain 5-10 FC as long as no CC and CYA stays down?

[aylad]

As long as no FC is holding steady, CC stays down and no chlorine loss overnight, then keeping it at normal ranges should be fine. Normal range is determined by your CYA, so here's the guideline...
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

So if your CYA is 65, then 5-10 will be fine--just don't let it get below 5. If the CYA is 100 or greater, then keep it between 8-15 ppm.

If you see CC starting to go up (greater than 0.5 and not dissipated by sun) or the pool starting to look hazy, then shock it again.
Janet

[herrmanncr]

Just wanted to pass on an update. Everything appears to be holding pretty good. Tested throughout the weekend and bleached as needed to maintain. Tested this evening and #s are:
FC - 6.5
TC - 7
CC - .5
PH - 7.2
ALK - 105
CH - 290
CYA - didn't test/out of reagent/this test is diffacult to read/still above 60

Not sure on maintenece dose yet. FC this morning at 4am was 10 and added 1 gal bleach.
Did not add all day and this evening it was 6.5 so added about 1/2 gal. Pool in full sun from 10 to 6/7. Any advise? Thanks everybody for your help. This site is a life saver!!!

[aylad]

Glad it's all working out for you. It will probably take a couple of weeks of testing and making additions until you work out the addition amount that's right for your pool. Sounds like you're already pretty close!

Janet