No Chlorine?

[aylad]

I had already put 5 gallons in around 9:30 pm before I saw your last post. At 10:30 pm I read FC @ 17ppm and CC @ 4ppm. At 6:30 am I read FC @ 1ppm and CC @ 1ppm. This evening was FC @ 0 and CC @ 0.5ppm.

With a FC of 17, and a CC almost 25% of that, something's eating it up. May or may not be ammonia, but either way the pool still needs shocking.

Edit: Pooldoc's post button works faster than mine tonight!

[MartyW]

I don't know if this has any bearing, but I never opened the pool last year. We were out of town part of the summer and also had some remodeling done. I don't know what the cya was 2 years ago. If what you are saying is continue to shock, how much chlorine would I need? The water looks great, clear and sparkling - just no chlorine. By the way, I'm a guy. Thanks, Marty

[aylad]

With a CYA of 60, shock level is 20 ppm, and you need to sustain that as consistently as possible until you can go overnight without losing more than 1 ppm of chlorine. I don't know how much total that will be, but

[MartyW]

I've looked at the best guess chart. I'm still at a loss as to how much shock I need to put in to reach the desired level.

Marty

[Watermom]

In your pool, each quart of 6% bleach will add a little under 1ppm of chlorine. So, when you test your chlorine level, use that as a reference to know how much bleach to add to take your chlorine level back up to 20ppm.

[aylad]

With a CYA of 60, shock level is 20 ppm, and you need to sustain that as consistently as possible until you can go overnight without losing more than 1 ppm of chlorine. I don't know how much total that will be, but

Boy, that was helpful, huh Internet went out in the middle of editing that post. Thanks, Watermom, for finishing it for me!