New large spa owner making no progress in balancing it. Please help!

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
10,739
Northern NJ
What strength is your MA?

What brand MA and what date code is on the bottles? Where did you buy it?

Add 3 oz of MA every 30 minutes and check PH in between until your PH is in the 7s.
 

dr2b0804

Member
Dec 16, 2018
20
Reno, NV
The brand of my MA is Hasa 31.45%. I bought it at the pool store that installed our spa. I couldn’t find a date code. I added 3 oz. 30 min ago and our full test results now are:
FC-2.5 ppm
CC-2.5 ppm.
pH- 7.8
TA- 50 ppm.
CH- 190 ppm

seems like some progress...
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
10,739
Northern NJ
The brand of my MA is Hasa 31.45%. I bought it at the pool store that installed our spa. I couldn’t find a date code. I added 3 oz. 30 min ago and our full test results now are:
FC-2.5 ppm
CC-2.5 ppm.
pH- 7.8
TA- 50 ppm.
CH- 190 ppm

seems like some progress...
Looking good.

More details on your spa - manufacture, model, gallons - in your signature can let us help you better.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
10,739
Northern NJ
I would be a bit concerned about your CC increasing from 1.5 to 3. That indicates something is growing in your water.

Is your spa indoors or outdoors? Does it have a cover? You need to leave your spa open outdoors for a while to have the UV from the sun burn off the CC's.
 

dr2b0804

Member
Dec 16, 2018
20
Reno, NV
Our spa is outdoors and covered but the CC was a typo and was actually 0.

Today’s (12/25):
FC-3 ppm
CC-0 ppm
pH- 7.8
TA- 50 ppm
CH- 190 ppm
 
Last edited:

dr2b0804

Member
Dec 16, 2018
20
Reno, NV
12/26:
FC-3 ppm

CC-1 ppm
pH- 7.5
TA- 50 ppm
CH- 200 ppm

So my CC has increased to 1:
-at what point do you do a breakpoint chlorination?
Also, how often do you recommend “shocking”? Thanks!
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
10,739
Northern NJ
12/26:
FC-3 ppm
CC-1 ppm
pH- 7.5
TA- 50 ppm
CH- 200 ppm

So my CC has increased to 1:
Open your cover during the day and the suns UV rays should burn off your CCs. You need to let your pool breathe.

-at what point do you do a breakpoint chlorination?
Just follow [FC/CYA][/FC/CYA] to ensure the proper FC level.

Also, how often do you recommend “shocking”? Thanks! [/FONT][/COLOR]
Never. "Shocking" is a pool store term to sell you costly chemicals periodically. If you maintain the proper FC/CYA balance it is never needed.

I suggest you review Pool School - ABCs of Pool Water Chemistry and Trouble Free Pool School

Also, you need a test kit that does FAS/DPD tests if you are going to apply TFPC methods. Your T-1005 test kit can only test up to FC 5. Review the [FC/CYA][/FC/CYA] and you will see recommended FC levels often go over 5. You can add to your kit FAS/DPD Chlorine CC's test
 

dr2b0804

Member
Dec 16, 2018
20
Reno, NV
12/31: (20:00)
FC- 2.0 ppm. (Added 18 oz. Cl)
CC- 0 ppm.
pH- 8.2 (added 18 oz. MA)
TA- 70 ppm.
CH- 180 ppm.

CYA- 30 ppm.


01/01: (10:00)
FC- 4.0 ppm.
CC- 1 ppm.
pH- 7.9
TA- 65 ppm.
CH- 180 ppm.
CYA- 30 ppm.

Still fighting the rising PH. Have to buy more MA today. Alkalinity is better however, and Chlorine is finally where it should be. Any suggestions on places to buy MA or preferred brands? I read a thread where someone bought some from Home Depot and got a bad “batch”.



 

jza1736

Silver Supporter
Apr 21, 2017
536
Greenlawn, NY
The TA PH relationship can be a pain to get right. What works for some is to let the TA get down to 40 with Muratic acid. My PH stays stable at that level from the time I fill it until I drain it.
 

dr2b0804

Member
Dec 16, 2018
20
Reno, NV
Ok. Thanks. Yeah the fight is real. Bring the pH down with Muriatic Acid, TA goes down, bicarb to bring TA up...pH is through the roof. :mad: I’d read that it can be a challenge especially the first couple of months....it seems at least less of a battle than it was hoping it’ll just get easier and easier as time goes on.
 

jza1736

Silver Supporter
Apr 21, 2017
536
Greenlawn, NY
Yeah I rode the roller coaster for the first month or 2. Now, after a drain and fill, I add enough baking soda to get me to 40 and PH just falls into place.