Low PH

Problems relating to pH and total alkalinity.
Increase ph, increase TA. Reduce pH, reduce TA.
pH chemistry advice and techniques for the pool.
walt

low ph

Postby walt » Fri 08 Sep, 2006 07:10

I have a salt water pool with low ph. Any suggestions?
Thanks


Guest

Postby Guest » Sat 09 Sep, 2006 09:38

pk4217 wrote:stop using the 3" trichlor, it'll keep raising your CYA and lower you pH. unless you replace your water, or find a way to drop the CYA.

calcium hypocloride will lower your pH.
so, your only choice for the rest of the season is liquid bleach.


Cal Hypo will increase your pH. It has a pH of 11.7 and sodium Hypo (bleach) has a pH of 13

Just get a little pH increaser and fix the problem directly. It will be a good fix and you will have it when you require it again. Its cheap and does the job and available most anywhere that pool chemicals are sold.

The Boric acid will help support your pH and may the water feel silky. It will also help raise the pH
chem_geek

Chlorine (bleach) does not cause pH to rise after use

Postby chem_geek » Tue 03 Oct, 2006 17:03

Anonymous wrote:Cal Hypo will increase your pH. It has a pH of 11.7 and sodium Hypo (bleach) has a pH of 13

The Boric acid will help support your pH and may the water feel silky. It will also help raise the pH

Actually, it turns out that Sodium Hypochlorinte (chlorinating liquid or bleach) or Calcium Hypochlorite (Cal-Hypo) only temporarily raise the pH. The chlorine will get broken down by sunlight or will oxidize organics or disinfect or turn ammonia into nitrogen gas -- all of which are acidic processes. The net effect is no change in pH. Now, chlorinating liquid, and to a lesser extent bleach, do add a small amount of sodium hydroxide (lye) for stability so that will result in a small net increase in pH, but not very much.

Full technical details may be found at Equations for Chlorine Chemistry

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