Opening 30ft above ground vinyl pool HELP

Ilovemylife1129

Well-known member
Aug 7, 2018
74
Canonsburg/PA
Pool Size
22000
Surface
Vinyl
Chlorine
Liquid Chlorine
Hello! I just tested leveled from my pool to start opening it. I knew I’d have to SLAM since my pool is green. I just started TFP method last year. Can I get some suggestions on getting started based on my numbers?
FC- 0
CYA- 0? I could fill to the top of the cylinder and still see the black dot
CH- 150
TA- 66
PH- 8.2? The color was so magenta so 8.2 is the highest reading in the kit.
Any suggestions on getting started would be great!!! Why is my CYA so low? Is that ok or? Should I bring the PH down some. How much muriatic acid do you recommend I start with?
Is my CH and TA okay as is?
What should I do to adjust before starting SLAM?
Thank you all!
 

zea3

Mod Squad
TFP Expert
LifeTime Supporter
Jul 10, 2009
14,034
Houston, Texas
Did you run the pump for 30 minutes before pulling a water sample to test? If you did use poolmath to add enough chlorine to reach 10ppm and test it again in 15 minutes and report the result here. Its very important to retest in 15 minutes and not wait longer.
 
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zea3

Mod Squad
TFP Expert
LifeTime Supporter
Jul 10, 2009
14,034
Houston, Texas
To answer your other questions your CH is fine, TA will change with pH reduction. Use poolmath to drop pH to 7.0, circulate and re-test. It may take a few rounds of MA to bring the pH down.
 
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Ilovemylife1129

Well-known member
Aug 7, 2018
74
Canonsburg/PA
Pool Size
22000
Surface
Vinyl
Chlorine
Liquid Chlorine
15 minute test results
FC 3.5
CC .05
CYA could see the black dot with it filled to the top
CH 175
TA 66
PH 8.2 or higher(8.2 was highest reading)
 

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CraigChing

Gold Supporter
Jun 15, 2019
189
Plymouth, Minnesota
Pool Size
22000
Surface
Vinyl
Chlorine
Liquid Chlorine
I don’t have a lot of experience with this, I’m opening on Saturday and monitoring threads like this because I expect to lose a lot of CYA myself. For me, though, it’ll be a good thing as I’ve been battling an inherited pool with high CYA for the last couple of seasons.

You could follow the advice in that link and continue adding chlorine and testing to see if you can get FC to hold. If it is ammonia though, don’t add CYA until you can get FC to hold
 
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Ilovemylife1129

Well-known member
Aug 7, 2018
74
Canonsburg/PA
Pool Size
22000
Surface
Vinyl
Chlorine
Liquid Chlorine
After reading another past post on here about ammonia, I am going to treat for ammonia every 30 minutes testing until my chlorine stays above 5ppm. The hen I will just SLAM as normal.
Just wondering at what point should o try to lower the ph? And will I need to raise the CYA eventually?
 

zea3

Mod Squad
TFP Expert
LifeTime Supporter
Jul 10, 2009
14,034
Houston, Texas
Go ahead and lower the ph, then start your ammonia remediation. You can test as often as every 15 minutes if you wish. Once the chlorine holds you can add CYA and start the regular slam. Do not add CYA until all the ammonia is gone.
 

zea3

Mod Squad
TFP Expert
LifeTime Supporter
Jul 10, 2009
14,034
Houston, Texas
You keep raising FC to 10, checking in 15 minutes and when you test with 6ppm or more the ammonia is gone. Ammonia consumes FC very quickly, so when chlorine holds longer the ammonia is gone.
 
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