TA or CH for SWG?

pcmacd

Well-known member
Oct 3, 2010
126
Maricopa County, AZ
I've been using the methods outlined on this site to bring my TA down from around 160++ to 80!

It took a pool full of 32% HCL to do it, but I'm on a roll here.

ASIDE: Home Depot has some awesome "water features" that are excellent for aerating pool water, less thatn $15 delivered to your local store (not usually a stocked item):

https://www.homedepot.com/p/Waterfall-Fountain-30701/206114789


My CH does not seem to be moving. Either that or my test technique is not so hot.

I suspect that it is the CH that is important to keep the SWG from fowling?

Please tell me it is the TA!!!!

I'm 1/5 owner of a shared well, and can't fill my pool from it just because. I hate to spend $~600 to change the water out so I can use my SWG again. The pool is less than three years old, but we get serious evaporation in greater PHX in the summer, and the make up water is around 250 CH.

I guess it does not take long for the CH to go over the horizon. Perhaps I'll wait until the "Monsoon Season", when I'll likely have to pump water out of the pool, and see where I am at that time. August is only two months away. And, dudes! IT RAINS HERE!!!!!

The storms run north up the Sea of Cortez along the Colorado River, and spread out all over Arizona.

It ain't a "dry heat" in August, here, guys!

mac
 
Having lived in Phoenix for many years, I know you can set your clock to those storms rolling in. :) Your CH won't budge until you get those rains though, or enough of them to where you can exchange some water. The only other method would be using a water softener to help augment the refills. The SWG tends to fowl from calcium build-up which not only happens when the CH gets too high, but also when the pH and TA are elevated which accelerates that scaling process. Those in your area compensate for a high CH level by purposely keeping the pH and TA a bit lower. This helps to keep the pool's "CSI" level (see PoolMath) in the slightly negative range to help prevent scale build-up. More info on these links:
Pool School - Calcium Scaling
Pool School - Water Balance for SWGs
 
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