High cya drain and refill plan

mauruz

Member
Jan 30, 2012
22
Pool Size
6700
Surface
Plaster
Chlorine
Liquid Chlorine
Hi

I have a high cya problem, 171 and I know I need to drain at least half my pool but being in central Texas that mean until the end of the fall before I have less than 80 weather days, so my plan was to while the pump is running drain to the skimmer line while I fill the bottom with tap water, closing the drain line, do this through several days until I get a reading below 100, will this work?
 

mauruz

Member
Jan 30, 2012
22
Pool Size
6700
Surface
Plaster
Chlorine
Liquid Chlorine
Leslies and taylor kit with diluted water to confirm.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
44,337
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
You could not get 171 from the Taylor CYA test.

Read the article I linked for options on exchanging water.

Though with your volume of pool, you could rent a sump pump from Home Depot and have it drained completely in about 2 hours. The refill.
 

mauruz

Member
Jan 30, 2012
22
Pool Size
6700
Surface
Plaster
Chlorine
Liquid Chlorine
Diluted water was 80, I just multiply it by 2 that is how ai got to 160 in the taylor kit, I can rent it but I won't be able to drain it until the end of the fall or my plaster will damage, was looking something to do right now, so seems that I'm doing the water exchange but in small quantities?
 

Rancho Cost-a-Lotta

Silver Supporter
Apr 10, 2018
2,434
Rancho Cucamonga, CA
Pool Size
18735
Surface
Plaster
Chlorine
Salt Water Generator
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CircuPool RJ-45
Section 3.5 in the link Marty posted describes in detail the "No Drain Water Exchange." If you can't drain and can't wait, it's probably the best option.
 
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