Ph v ta

[Watermom]

To aerate, you can turn your return jet eyeballs upward to create rippling/bubbling on the surface. Or throw in a bunch of kids to play around. Anything that causes splashing will aerate.

[wposton84]

I've never heard of aeration before, does anyone have an idea how it raises pH??

[clueless at times]

Well thats easy enough...thanks

[CarlD]

I've never heard of aeration before, does anyone have an idea how it raises pH??

Not sure of the chemistry, but there's a gasification process that turns an acid into a hydroxide by the removal of, I think it's CO2. Chem_Geek has the whole chemistry of it down pat.

If your T/A and your CH are both too high, it's easy to get cloudy water. For plaster pools, usually a CH of 200 to 400ppm is recommended. But if your CH goes to 500pm and your T/A rises, then you'll get cloudy water.

Most vinyl pool owners don't have high calcium so it's not a problem if T/A is higher.

[chem geek]

The short answer is that carbon dioxide in water is carbonic acid so when you are removing carbon dioxide from the water you are effectively removing carbonic acid -- removing an acid raises the pH. For technical reasons I won't get into here, the TA does not change.

[CarlD]

The short answer is that carbon dioxide in water is carbonic acid so when you are removing carbon dioxide from the water you are effectively removing carbonic acid -- removing an acid raises the pH. For technical reasons I won't get into here, the TA does not change.

Thanks for the SUPER-simple and clear explanation, Richard. I think I finally understand how the aerating raises pH!

[chem geek]

I don't think I can take credit for that explanation since I believe waterbear (Evan) was the first to explain it that way though it's been so long that I don't remember exactly who said what first -- not that it matters.

[Watermom]

Where is Evan, by the way? I was thinking about him the other day and wondering where he's been.

[waterbear]

I don't think I can take credit for that explanation since I believe waterbear (Evan) was the first to explain it that way though it's been so long that I don't remember exactly who said what first -- not that it matters.

http://www.poolforum.com/pf2/showthr...9434#post49434
My first post in the thread about halfway down in bold.