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CO2 to lower pH

Posted by Darren Bateson on March 9, 2010 at 4:03pm in Pool Service Topics
I am exploring the idea of setting up a client with a CO2 system to manage the pH in his pool.  He is in a rural area and using well water for make up.  He has a large vanishing edge and he likes to have it running for about 18hrs a day so the auto fill is running often.  The source water is very high in TA and the pH is high out of the tap...oh yeah, it's salt too.  Great variables huh?  Not to mention the tile in the pool is black and due to the economy last year he scaled back my visits to once every 3 weeks instead of once per week.  Needless to say there is scale all over the place and I could never keep the pH down.  I have pricing for 20# and 50# tanks from a local supplier but was curious if anyone uses CO2 and how much you tend to go through.  Any thoughts would be appreciated.  Thanks in advance.

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Tags: co2, ph, scale
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Replies

  • Darren Bateson March 9, 2010 at 5:35pm
    Hey Lester, thanks for the post. I have been reading some other posts and did notice talk of that. Since my TA is high it doesn't sound like CO2 is the way to go here. Probably just as well, I expect I would go through quite a bit of it in this application.
  • Lester Eric Brehm March 9, 2010 at 4:41pm
    Darren, In my opinion if your TA is already high from the source water CO2 is just going to make the problem worse. CO2 is only going to lower pH not the TA.I would look at an acid feeder instead and keep your TA on the low side adjusting your CH accordingly . scroll down the forum to Hank Laverys' post and read what has been posted there it might help explain what I'm trying to say.
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