Taking Action in Jersey

[catrispoli2]

33,000 gal IG vinyl
Cartridge Pentair
Installed in 2005
T100 kit readings
Auto chlorination tablets

Ready to move to liquid chlorine
FC 25
CC 0
TA 80
CYA 100
Borate 15
Water clear sparkling and CYA was 70 last year

Been reading your threads for 2 summer seasons and need to take the plunge to the liquid chlorine method. Plan: Empty auto chlorination tabs from feeder. Start by using 1 gallon 12% liquid chlorine in front of return feeder when on. Slowly adding the gallon over 2 minutes in deep end. Test daily, use 1 gallon daily adjusting to keep,FC between 12 -15. Does this sound ok?

 

[jblizzle]

Welcome to TFP!!!

Not quite so fast ...

Your first step should be to replace at least 50% of the water to get the CYA back in the recommended range. You also missed the pH test.

Please add your location (City, State or City, Country) to your profile and pool details to your signature as described HERE as it will help us help you in the future.

 

[tim5055]

CYA was 70 last year and 100 now??

100 is the limit of the CYA test, so you have to do a diluted test. While the full instructions are in the Pool School, here is the short version. Mix 50% pool water with 50% tap water. Use this mixed sample as your test water. If still at a 100 you will need to dilute more. Here is a great chart by JamesW to explain dilution rates and what you multiply the results by to get an approximation of your CYA level.


Pool water......Tap or distilled water.........Multiply result by

....1...................1................................2
....1...................2................................3
....1...................4................................5


Oh, heck - Instead of Jason's link here is what we need to help more

• The size of your pool in gallons
  
• If your pool is an AG (above ground) or IG (in ground)
  
• If it's IG, tell us if it's vinyl, plaster/pebble, or fiberglass
  
• The type of filter you have (sand, DE, cartridge) and, if you know, the brand and model of the filter.
  
• If you know, please tell us the brand and model of the pump, and mention if is it a two speed or variable speed pump.
  
• Date of pool build/install, particularly important if less then a year old.
  
• What kind/model of water test kit you are using
  
• Other significant accessories or options, such as a spa , SWG, or cleaner
  
  
  I' glad you got the bug to take control of your pool and that is what this site is all about, but let's do it right.
  

 

[JasonLion]

There isn't much point in doing the CYA test with dilutions higher than 1 to 1. You lose so much precision that the results are essentially meaningless.