- Nov 26, 2013
- 3
Hi There,
I have been using the PoolMath Calculator and I am trying to understand the link between the TAL levels and the amount of soda ash needed to raise the pH.
What I discovered is that the higher the Tot Alk the more soda ash I need (quantity) to bring the pH up to my target levels.
My understanding was that if your TAL was already high the pH would tent to follow ie - move high.
Question - Why do I need so much Soda Ash to bring my pH up when it is so close to my target. see below example.
50,000 ltr pool
pH reading / Target / Soda Ash
6.8 / 7.2 / 1879 grams
--------------------------------------------------------------------------------
Alk Reading / Target
120 / 120
Hope someone can shed some light on this for me.
I have been using the PoolMath Calculator and I am trying to understand the link between the TAL levels and the amount of soda ash needed to raise the pH.
What I discovered is that the higher the Tot Alk the more soda ash I need (quantity) to bring the pH up to my target levels.
My understanding was that if your TAL was already high the pH would tent to follow ie - move high.
Question - Why do I need so much Soda Ash to bring my pH up when it is so close to my target. see below example.
50,000 ltr pool
pH reading / Target / Soda Ash
6.8 / 7.2 / 1879 grams
--------------------------------------------------------------------------------
Alk Reading / Target
120 / 120
Hope someone can shed some light on this for me.