Hello,
I have a 17k gallon pool plaster cartridge filters and this year I seem to be having alot of issues with balancing the water:
My current test results are :
FC: 2.47
TC: 2.8
Ph:7.9
Alk: 77
CYA: 119
Calcium: 202
Iron/Copper : .01
Phosphates: 1691
Pool water is crystal clear with occasional yellow algae spots that brush off easily
I have switched to liquid chlorine also due to the CYA issue.
What I have done:
I recently had very high CYA values so I drained 2 times to bring it down from 200 to 120.
Added Muriatic acid to bring down PH but it continues to hover around 8. recently added 2 quarts and it made only a small change over several days (.01)
I Added 1.5L of Phos free ( Clean filters before and after a 48 hr run) It only brought my Phospahtes from 2000 to 1691.,
I tested all using a taylor kit. The only item that differs is the Alk. I measure 110 where the pool store measures 77 but it indicates this is due to the CYA level and it made an adjustment to the calculation.
So the recommendation I have now is to increase ALk first , but I dont believe this is right because its a calculated adjustment because of CYA. Another pool store said Alkalinity should be left alone and I should add muriatic acid and phos again.
So my question is what should I be chasing first. So far I have been given bad advice from the pool store and the chemicals I have been adding have little effect. I believe I am following proper directions for adding everything and measuring carefully.
Thanks!
I have a 17k gallon pool plaster cartridge filters and this year I seem to be having alot of issues with balancing the water:
My current test results are :
FC: 2.47
TC: 2.8
Ph:7.9
Alk: 77
CYA: 119
Calcium: 202
Iron/Copper : .01
Phosphates: 1691
Pool water is crystal clear with occasional yellow algae spots that brush off easily
I have switched to liquid chlorine also due to the CYA issue.
What I have done:
I recently had very high CYA values so I drained 2 times to bring it down from 200 to 120.
Added Muriatic acid to bring down PH but it continues to hover around 8. recently added 2 quarts and it made only a small change over several days (.01)
I Added 1.5L of Phos free ( Clean filters before and after a 48 hr run) It only brought my Phospahtes from 2000 to 1691.,
I tested all using a taylor kit. The only item that differs is the Alk. I measure 110 where the pool store measures 77 but it indicates this is due to the CYA level and it made an adjustment to the calculation.
So the recommendation I have now is to increase ALk first , but I dont believe this is right because its a calculated adjustment because of CYA. Another pool store said Alkalinity should be left alone and I should add muriatic acid and phos again.
So my question is what should I be chasing first. So far I have been given bad advice from the pool store and the chemicals I have been adding have little effect. I believe I am following proper directions for adding everything and measuring carefully.
Thanks!