Chlorine Demand

[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

[Watermom]

There are a couple of threads you can read. Then, come back if you still have questions about closing. By the way, do you have inground or above ground. Your sig says AG but your post says inground.

http://www.poolforum.com/pf2/showthr...for-the-Winter

http://www.poolforum.com/pf2/showthr...for-the-winter

[gfritz1]

inground

[PoolDoc]

I'll update your signature, if you enter an updated Pool Chart record:

Pool Chart Entry Form

I'm guessing you have the K2005 (DPD color match) rather than the K2006? You should indicate that as well.

[gfritz1]

Really spoke more about draining the lines etc etc then it did about chemicals .Normally when closing a chlorine pool with winterizing kit you have the shock-the stain preventer-some type of floater that has something in it and a algae preventer . With BBB chemically what do you do ?Also normally I have been adding when on chlorine tabs a algicide weekly like back up . My understanding with BBB I do not need to do this ? Presently all I have been adding is the bleach each day and keeping my FC above 5 due to my cya. Normally each day it drops back to 3.4-4.4 and then I add between .5 and .75 gals. Water has been excellent and it has been bonus days in Pa as water is 86 .Closing is withing next 3 -4 weeks so getting ready thus reason for questions. My winter cover is mesh

[aylad]

I don't close my pool, but I think the general consensus is to shock the pool, add a dose of Polyquat, and wait a day, then bring the chlorine levels back up...and then cover the pool. The earlier you open in the spring, the less chance there will be for a mess on opening--I think most folks try to open as soon as they can while the water is still cold.