Hello All!
I bought a house and inherited a 2 year old 27' AG pool (15,400 gal), running a sand filter. Electrical and bonding has been brought up to code. Filter and pump tested and operational.
I picked up a K2006 kit and ran a battery of tests yesterday:
pH-Yellow, so assume it is <6.8
CYA - 0
FC - 0
CC - 0
TA = 20ppm
The seller told me he left everything he had for the pool. I only found 5 gal empty Chlorine jugs. No other chemicals or test kit was found. It looks like he just dumped in chlorine and hoped for the best (typical based on some of the half-ass work I have found in the house to date)
Water is greenish, with leaves on the bottom of the pool (PO covered without cleaning). I can feel a slime on the walls
My plan:
Raise pH to 7.4
SLAM with Trichlor to add CYA and chlorine. Switch to straight liquid chlorine once CYA gets to 30ppm
New to Me Pool - Want to make sure I am on the right track
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- I'm new here
- Posts: 4
- Joined: Thu 06 Jun, 2019 07:24
- My Pool: 27' Round Hayward AG, 48" average depth. 15,400 gal
Filter: Hayward Pro Series Sand Filter S180T92S
Pump: Century SP1510 1hp
New to Me Pool - Want to make sure I am on the right track
27' Round Hayward AG, 48" average depth. 15,400 gal
Hayward Pro Series Sand Filter
Hayward 1hp Pump
Hayward Pro Series Sand Filter
Hayward 1hp Pump
-
- Pool Industry Leader
- Posts: 2592
- Joined: Tue 06 Sep, 2011 05:48
- My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
- Location: United Kingdom
Re: New to Me Pool - Want to make sure I am on the right track
Sounds like a reasonable plan
You would need to Slam (Shock Level and Maintain) at about 10ppm
The only thing with Trichlor is you can't be that precise with your dosing
With a low TA you will want to raise that as well as pH
Also a good brushing
You can also use Pool Maths to work out what quantities to use
For every 10 ppm Free Chlorine (FC) added by Trichlor, it also increases Cyanuric Acid (CYA) by 6 ppm.
For every 10 ppm FC added by Dichlor, it also increases CYA by 9 ppm.
For every 10 ppm FC added by Cal-Hypo, it also increases Calcium Hardness (CH) by at least 7 ppm
Liquid chlorine (sodium hypochlorite or plain bleach)
Muriatic acid (hydrochloric acid) to lower pH and TA
Bicarbonate of soda to raise TA
Aeration will raise pH only
Soda ash will raise pH and TA
You would need to Slam (Shock Level and Maintain) at about 10ppm
The only thing with Trichlor is you can't be that precise with your dosing
With a low TA you will want to raise that as well as pH
Also a good brushing
You can also use Pool Maths to work out what quantities to use
For every 10 ppm Free Chlorine (FC) added by Trichlor, it also increases Cyanuric Acid (CYA) by 6 ppm.
For every 10 ppm FC added by Dichlor, it also increases CYA by 9 ppm.
For every 10 ppm FC added by Cal-Hypo, it also increases Calcium Hardness (CH) by at least 7 ppm
Liquid chlorine (sodium hypochlorite or plain bleach)
Muriatic acid (hydrochloric acid) to lower pH and TA
Bicarbonate of soda to raise TA
Aeration will raise pH only
Soda ash will raise pH and TA
-
- Pool Industry Leader
- Posts: 1337
- Joined: Tue 17 Oct, 2017 10:52
- My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
- Location: UK
Re: New to Me Pool - Want to make sure I am on the right track
Don't bother adjusting pH or TA yet, both will rise when chlorine is added and chlorine is more powerful at the lower pH. Add chlorine at night so it doesn't get burned up by the sun. Deal with the algae first and adjust levels later. Being vinyl you do not require the TA level higher than about 40ppm. That will stop the pH rising. Using a low TA means pH adjusting uses a lot less acid or alkai but there really is no need to have 80-120 that figure is for concrete plaster and tiled pools
-
- I'm new here
- Posts: 4
- Joined: Thu 06 Jun, 2019 07:24
- My Pool: 27' Round Hayward AG, 48" average depth. 15,400 gal
Filter: Hayward Pro Series Sand Filter S180T92S
Pump: Century SP1510 1hp
Re: New to Me Pool - Want to make sure I am on the right track
Update:
All is going well. Ended the SLAM a couple days ago. Kids used the pool last night with no issue.
Ran full battery of tests this AM:
FC - 4.0
CC - 0
pH - 7.4
TA 70
CH 40
CYA - >20 (when i fill the tester to the top, its a little cloudy, but not disappearing yet)
Temp- 72F
At this point, I am clorinating with Triclor pucks, and will continue to do so until I reach a CYA or 30, then I will transition to liquid chlorine.
All is going well. Ended the SLAM a couple days ago. Kids used the pool last night with no issue.
Ran full battery of tests this AM:
FC - 4.0
CC - 0
pH - 7.4
TA 70
CH 40
CYA - >20 (when i fill the tester to the top, its a little cloudy, but not disappearing yet)
Temp- 72F
At this point, I am clorinating with Triclor pucks, and will continue to do so until I reach a CYA or 30, then I will transition to liquid chlorine.
27' Round Hayward AG, 48" average depth. 15,400 gal
Hayward Pro Series Sand Filter
Hayward 1hp Pump
Hayward Pro Series Sand Filter
Hayward 1hp Pump
-
- Pool Industry Leader
- Posts: 2592
- Joined: Tue 06 Sep, 2011 05:48
- My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
- Location: United Kingdom
Re: New to Me Pool - Want to make sure I am on the right track
Those figures look good, you might just want to do an overnight chlorine loss test OCLT to be100% sure
-
- I'm new here
- Posts: 4
- Joined: Thu 06 Jun, 2019 07:24
- My Pool: 27' Round Hayward AG, 48" average depth. 15,400 gal
Filter: Hayward Pro Series Sand Filter S180T92S
Pump: Century SP1510 1hp
Re: New to Me Pool - Want to make sure I am on the right track
I have done testing in the evening and first thing on AM when I was SLAMing. Once I got 2 days of less than .5 loss, I ended.
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Sent from my iPhone using Tapatalk
27' Round Hayward AG, 48" average depth. 15,400 gal
Hayward Pro Series Sand Filter
Hayward 1hp Pump
Hayward Pro Series Sand Filter
Hayward 1hp Pump
-
- Pool Industry Leader
- Posts: 2592
- Joined: Tue 06 Sep, 2011 05:48
- My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
- Location: United Kingdom
Re: New to Me Pool - Want to make sure I am on the right track
That's perfect, you're done
All you need now is to keep on top of it by keeping regular dosing of chlorine
All you need now is to keep on top of it by keeping regular dosing of chlorine
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