Chlorine Demand

[PoolDoc]

I initially filled out the pool chart a few weeks ago. Is it not saved?

I'm working on a plan to convert some of the data in the Pool Chart into signatures that will show up each time you post, but right now, it's just a plan. We have to do a search on the pool data, which is getting to be rather large set!

[Watermom]

With a CYA of 80, if you let your chlorine drop below 5, I'd suggest shocking the pool. It doesn't take long for something to get started in the water.

[gfritz1]

Update and a few questions - Reading tonight as it has been holding well since did the drain and 8.5 gal bleach . Tonight PH 7.8 FC 3.6 CC 0 TC 3.6 ALK 140 HARDNESS 140 CYA around 60 All tested with Taylor kit. So what do I add under BBB to raise hardness or domt you worry aboyut it at this level? Would you do anything to adjust AlK a little or leave ? I am using between 3 qt and a gal of bleach a day to keep FC above 5 . Is this normal as at this rate the bleach is about $1.60/day or $48/month ? Would a SWG be less expense to operate ?Water has been excellent

[Watermom]

Where do you live? Some pools in places with really hot climates do better with CYA a little higher.

In a vinyl pool, you do not need to worry about calcium hardness.

Your TA is fine where it is.

An SWCG is a very costly unit. It would take a long time to recoup your cost as opposed to just using bleach, but some people really do like having them.

[gfritz1]

Live in Northwestern PA above State College . My CYA has been between 50 and 80 . At the pool store with strips it looked like 100 yesterday .But using Taylor kit I ended up between 60-70

Thanks

[Watermom]

Trust the Taylor kit's results.

I wouldn't think that in your area you would need CYA higher than 60-70. People who we sometimes suggest that to are those living in the really hot areas of the south. I think you're probably fine with 60-70. However, if you want to bump your CYA up some, you can but if you do so, you'll need to run higher chlorine levels per the Best Guess Chlorine Chart.

[gfritz1]

Has been 3 weeks since started BBB from a chlorine demand condition .Water has remained excellent .I have had to add bleach each day to get back up above 5 ppm as normally find between 3-4 each day. Averaging roughly $1.03/day based on GV bleach at $2.98 for 1.45 gal

Starting to think that closing is less then 4-6 weeks and was wondering what the process is with the BBB method? I have inground and use a Loop Lock mesh cover for winter .Will close for sure by Oct st as here in Western Pa the nights are allready in 50