I can’t keep the CYA level up enough to keep the chlorine from getting eaten up by the sun. Has anyone else ever had problems keeping it up? What makes it go away? I am not backwashing much or draining and filling the pool. The guys at Leslies are perplexed but just want to sell me more CYA. Central Texas location so lots of sun.
CYA Disappearing quickly
- Thread starter Boomhauer01
- Start date
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- cya
- Jun 22, 2014
- 47,979
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
Welcome to TFP! 
My first suggestion would be to not trust what the pool store says. Test your own water with a TF-100 or Taylor K-2006C test kit. That's extremely important. Interestingly enough the CYA test often flawed at pool stores. I could easily see them telling you (and selling you) to add more stabilizer only to find out in a couple weeks the CYA is too high then you need to drain water.
Stick around, post your own reliable test numbers, and we'll be happy to help.
www.troublefreepool.com
My first suggestion would be to not trust what the pool store says. Test your own water with a TF-100 or Taylor K-2006C test kit. That's extremely important. Interestingly enough the CYA test often flawed at pool stores. I could easily see them telling you (and selling you) to add more stabilizer only to find out in a couple weeks the CYA is too high then you need to drain water.Stick around, post your own reliable test numbers, and we'll be happy to help.
Pool Care Basics Archives
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www.troublefreepool.com
- May 23, 2015
- 24,492
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Helps if you fill out your pool equipment and pool type info. Without that, it’s hard to know how to best advise.
CYA does not leave the water. It only goes away through removal of water and refill with fresh water. So either it’s a testing error (highly likely) OR your pool has a leak.
CYA does not leave the water. It only goes away through removal of water and refill with fresh water. So either it’s a testing error (highly likely) OR your pool has a leak.
Dang ole man Leslies I tellyawhut they got that machine and it’s all beep beep boop that’ll be $200. Dag gum highway robbers man so I stick to Mega-Lo-Mart.
Isn't there something about ammonia and CYA breaking down or getting used up by the ammonia?
- May 23, 2015
- 24,492
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Bacteria can sometimes grow in a winterized pools with a cover on and it can use CYA as an energy source (food) with the byproduct being ammonia. But that can not happen easily in a chlorinated pool.
- Sep 3, 2018
- 1,330
- Pool Size
- 17000
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
- May 3, 2014
- 58,745
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
At pool water temperatures above 90F, you can see about 10% per month degradation.
- Sep 3, 2018
- 1,330
- Pool Size
- 17000
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Until these last couple weeks of cooler temps our water was in the 90s 
. I did notice a drop in CYA.
. I did notice a drop in CYA.Similar threads
