Lowering PH

[PoolStored]

Volume of the pool seems to be 50k instead of the 30k the pool store said it was. I am getting the adjustments to Fc/Ph as expected based on the 50k volume. I continue to add MA to keep the TA coming down. I started at 240 and last test was 120. I'll keep adding MA each day until I get down to 60. Thanks to all with the information I've been provided.

Outstanding progress! You are the master of your pool!

 

[mgtfp]

Also keep track of how much acid you added and how much that changed the TA over a period where you didn't add fill water (or rain). The effect of acid on TA is much more direct in its calculation than pH, and will chlorine you always have the uncertainty of chlorine loosing its strength over time. That will give you another clue about the pool volume.

 

[AlexPowell]

If it makes you feel better, when I filled my pool I took photos of the meter before and after to get the pool volume. The volume was off by 5,000 litres. Thankfully for me the meter was running slow so I've been under-paying