Problem Pool Stats

Adding chemicals, vacuuming, backwashing,
brushing, filter care, filter cleaning, replacing
worn or broken pool parts
jsf721
Pool Enthusiast
Pool Enthusiast
Posts: 10
Joined: Thu 02 Sep, 2021 15:42
My Pool: 20 x 40 in ground Heated Vinyl lined pool

Problem Pool Stats

Postby jsf721 » Wed 08 Sep, 2021 13:35

FC 10.49
TC 10.49
PH 7.9
Total Alkalinity 67
Calcium Hardness 157
Cynaric Acid 98
Iron .1
Copper 0
Phosphates 242
TDS 200

Just did another Orenda Phosphate remover dose
Did an Algicide treatment
this Saturday will dump 12" of pool from bottom and refill

Any other suggestions


Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 2169
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: Problem Pool Stats

Postby Denniswiseman » Wed 08 Sep, 2021 14:13

To get your CYA down to about 50 (where is should be) you need to dump about half
If you are to winterise soon maybe let the winter rain and snow dilute it for you
Your FC isn't sufficient to sanitise with a CYA of 100
Chlorine / CYA Chart
Recommended Pool Levels
Teapot1
Swimming Pool Wizard
Swimming Pool Wizard
Posts: 88
Joined: Thu 29 Apr, 2021 00:43
My Pool: 12000 gallons vinyl liner,

Re: Problem Pool Stats

Postby Teapot1 » Wed 08 Sep, 2021 16:20

Why the algaecide?
Reasonable chlorine figure unless its green and you need to SLAM.
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 2169
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: Problem Pool Stats

Postby Denniswiseman » Thu 09 Sep, 2021 01:29

Teapot1 wrote:Why the algaecide?
Reasonable chlorine figure unless its green and you need to SLAM.

Hi Teapot
With a CYA of 100 you need about 12ppm of FC and slam of 39
His TC and FC are the same so he doesn't need to slam
He's probably been pool stored
Teapot1
Swimming Pool Wizard
Swimming Pool Wizard
Posts: 88
Joined: Thu 29 Apr, 2021 00:43
My Pool: 12000 gallons vinyl liner,

Re: Problem Pool Stats

Postby Teapot1 » Thu 09 Sep, 2021 03:36

When I was in contact with Richard (chemgeek) we were working on normal level of chlorine being 7.5% of the CYA figure, as with all pools some areas of the world have worse water and some worse filtration so may need a bit more but at that level the chlorine can unbind from the CYA to attack the algae Richard said but I never quite understood.
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 2169
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: Problem Pool Stats

Postby Denniswiseman » Thu 09 Sep, 2021 04:54

Me neither
jsf721
Pool Enthusiast
Pool Enthusiast
Posts: 10
Joined: Thu 02 Sep, 2021 15:42
My Pool: 20 x 40 in ground Heated Vinyl lined pool

Re: Problem Pool Stats

Postby jsf721 » Thu 09 Sep, 2021 09:45

I am new to to this what is SLAM?

Teapot1 wrote:Why the algaecide?
Reasonable chlorine figure unless its green and you need to SLAM.
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 2169
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: Problem Pool Stats

Postby Denniswiseman » Thu 09 Sep, 2021 10:37


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