Clear, but no chlorine???

[mary jo]

Yup- I hear you. I want this solved even if it means investigating the lights. I will define keep FC level up to 15 and shock to 30 on Sunday evening, keep it at 30 for at least 24 hours and go from there.

We don't close our pool until late September so I have about 6 weeks to clear things up.

[BigDave]

It may take more than 24 hours to meet the endpoint criteria - just to be clear.

[FormerBromineUser]

What BigDave said!!!! And do some research on the light issue. With no visible algae and high chlorine demand, it is worth considering. The demand is coming from somewhere... I was scared to death my first time. Afterwards I just laughed at myself because it was so easy. You can shut off the breaker if you're concerned about the electricity. Glad your Mom is better.

[FormerBromineUser]

Just an aside here and sorry for hijacking you, MaryJo. BUT you are the man, BigDave for working so hard during Ben's hiatus. He is so incredible and we all owe him SO much. Thanks from me. Again, my apologies, MaryJo!

[mary jo]

Just checking in. Last night (Sunday) at 9pm I added the jugs of chlorine to get FC to 30. This morning at 7:30 I tested (using diluted sample as you described- 5:1, results x6 and DPD reagent) and got FC=18. My FAS reagent comes in today so I can get more accurate results.
I just added 3 jugs to get the FC back up to 30. My question is: how often do I check during the day?

[BigDave]

Check as soon as the FAS-DPD reagent comes in.

[FormerBromineUser]

Then, as often as you can to keep it at shock level. (Ignore purple highlighting).