TA at zero?

yesjenks

Active member
May 2, 2016
41
Paramus / New Jersey
Hello,

I just received my tf-100 kit and testing my water for the first time this season. TA wouldn’t even register at 0.After adding the r008 the water was red and wouldn’t turn green.
My ph has been low 6.5ish, so I expected my alk to be off, but not at zero.

is this possible? Should I add 15 lbs of baking soda, let it sit for a few hours and retest?
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
31,199
Laughlin, NV
It is possible. You have been using trichlor pucks/tablets, right? The low pH is destroying your liner.

I would suggest you add 5 lbs of Soda ash aka Washing Soda (Twenty Mule team), NOT the laundry detergent.

Let that circulate for 30 minutes to an hour, brush well. Test pH and TA. Once either the pH is in the 7's OR the TA is above 50 ppm, then post here and we can guide you to dial it in.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
31,199
Laughlin, NV
Arm & Hammer Super Washing Soda Detergent Booster & Household Cleaner,

Sorry -- not Twenty Mule Team -- I get them mixed up!!!
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
31,199
Laughlin, NV
Did you brush really well?

If after brushing and a bit more time still no change, add another 5 lbs. After that we will switch to baking soda and borax, if necessary.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
31,199
Laughlin, NV
With a CYA of 110 (did you do the dilute method test for that?), you need to drain and refill at least 50% of your pool volume. No need to waste more chemicals until that is done.
 

crusemm

Gold Supporter
Bronze Supporter
Sep 1, 2011
342
North Texas
So, then your choice is to do a water exchange. fill with clean water and drain off your pool water. This takes a lot longer and will use a lot more water. With a vinyl pool, as long as you leave some in the bottom, you should be able to drain and fill fairly easily.