Problem Pool Stats

[jsf721]

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]

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]

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

[Denniswiseman]

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]

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]

Me neither

[jsf721]

I am new to to this what is SLAM?

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

[Denniswiseman]

Slam (Shock Level and Maintain) with relation to Chlorine / CYA Chart and Recommended Pool Levels