Low PH level

Knarf

Member
Apr 18, 2007
17
Orland Park, Il
I have been running a low PH for most of this season (mostly between 7.0 and 7.2). What are the negative effects of running a low PH? I will probably put in some borax tonight to raise it to the 7.4-7.6 level, but just currious if running it low can cause any permanent/temporary damgage.

Thanks in advance
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
As long as the PH is always at least 7.0 there shouldn't be any damage to the pool or equipment. The risk in being right around 7.0 is that you can easily go lower.

Many people have eye irritation when the PH is below 7.2. Everyone is differernt, so it may not bother you.
 

Knarf

Member
Apr 18, 2007
17
Orland Park, Il
I have one of the recommended test kits (K-2005), but it only goes as low as 7.0, so I'm really not sure how low it is or was, but recently my son complained of eye irritation so I will definitely raise it today, but how do you get accurate PH readings below 7.0?


Thanks Again
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
Some of the PH tests go down to 6.8, actually your test works down to 6.8 if you know what color to look for. To read lower than that you need a different, not swimming pool, PH test kit.

Generally, instead of knowing the exact PH, you just raise the PH by about 0.4 and see where that gets you.
 

Knarf

Member
Apr 18, 2007
17
Orland Park, Il
Actually I gave you the wrong test kit # mine is K-2006 and my PH tube only goes down to 7.0 and since It's never a perfect match it makes me wonder if I'm at 7.1 or 6.8 or less. But I guess it may be irrelevant because if it's that low I should raise it anyway like you said.


Thanks for the help.
 
G

Guest

What is your TA and what kind of chlorine are you using? (I suspect that constant low pH means you are using trichlor). A full set of test results would be helpful.
 

Knarf

Member
Apr 18, 2007
17
Orland Park, Il
I got my PH up (using PH-Up from the pool store) to 7.4, so for the time being I'm ok. I almost exclusively use bleach to chlorinate except when I went on my recent 10 day vacation (I "shocked with bleach and floated several pucks). Not only was the pool crystal clear when I came back but I still had a lot of FC (over 10).

For the record my current numbers are as follows:

PH 7.4
FC 5.0
TC 5.0
CYA 35
TA 100

Thanks again
 

branchop

LifeTime Supporter
May 27, 2008
79
North Carolina
In the future, before going to the pool store (or any store) turn your eyball jets towards the surface. By breaking the surface, it helps to raise your Ph. I find this is just as effective and a whole lot less expensive.
 
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