pH & Total Alkalinity

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Reduce Total Alkalinity Levels
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by Larry » Mon 16 Jan, 2006 16:24

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The acid slug method in this post has been discussed and disproved throughout this thread. Here is a safer and better method for reducing Total...

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Thanks for all of this helpful info. I came up with a cool way to aerate the pool. It used parts that many pool owners will have and it has been...
91 Replies

249242 Views

Last post by SteveO
Wed 14 Jun, 2017 17:03
Very Low T.A. and dropping overnight

by monkeyhanger » Tue 16 May, 2017 05:55

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hi All, new to the forum and looking fir some help.
We have a 25mx10m pool (school) 0.8m shallow to 1.8 deep
The problem we have is constant low...

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Hi Andy
I've sent you a private message as there is an email to a more professional person who may be able to help you

3 Replies

64 Views

Last post by Denniswiseman
Tue 16 May, 2017 13:44
Sand in the bottom of my pool - can't fix
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by sandinmycrack » Tue 20 Jan, 2009 22:39

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I have had a slow but steady build up of sand from my filter on the bottom of my in ground pool for several months now. It first accumulates on the...

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20 grade silica sand is what you need 40 is smaller and can find its way through the laterals
14 Replies

24662 Views

Last post by Denniswiseman
Sun 07 May, 2017 09:31
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0 Replies

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Last post by merryramon
Fri 05 May, 2017 22:22
Can't Raise PH levels / soft water
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by Guest » Sun 30 Apr, 2006 16:25

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I can't seem to get my ph increased. Current readings are TA=160, PH=6.8, CH=250, Cy.Acid=95. Vinyl Liner pool in Minnesota. I did fill it with 50%...

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I've been having the same problem water is cloudy and oh low have been a aerating 3 hours and I'm already starting to see bottom of my pool, love...
14 Replies

34559 Views

Last post by Serenna
Fri 21 Apr, 2017 11:28
Structured approach to salt water pool chemistry, help please.

by Cameljockey » Sat 14 Jan, 2017 00:02

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HI all, I'm new to pool ownership but think I understand the basics, however re-starting a 55,000 litre pool is proving confusing. I would ask in...

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I use the Taylor K2006C which I have to get from the states as it's not available here in the UK
Have you checked out those links as there is a lot...

3 Replies

275 Views

Last post by Denniswiseman
Wed 18 Jan, 2017 16:38
High pH, normal TA, adding acid doesn't decrease pH

by jamescookmd » Sun 27 Nov, 2016 19:12

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I'm adding lots of muriatic acid to my pool and the pH doesn't change.

pH 7.9, FC 4 ppm, TC 4 ppm, TA 100 per Taylor test kit.
pH 7.9 per electronic...

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Hi James
A few questions
How do you chlorinate? A SWG tends to raise the pH
Do you have a waterfall or other form of aeration which raise's pH?
Does...

1 Replies

214 Views

Last post by Denniswiseman
Mon 28 Nov, 2016 05:22
Are sulfates a problem in Salt Water Pools?

by kamkuda » Wed 26 Oct, 2016 13:42

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I was told to stop using dry acid in my salt water pool because it adds sulfates to the water and they stay there. The levels will increase because I...

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thank you

8 Replies

216 Views

Last post by kamkuda
Sat 29 Oct, 2016 08:11
CYA not measureable?, TA high, ph Low

by eswenson » Tue 07 Jun, 2016 20:15

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I've got a 40,000 gallon pool with a CYA level that I can't measure (I'll explain), a TA that is now about 140ppm, and a ph that is 6.8 after adding...

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Ok, I'll get some cyanuric acid to try to raise the CYA. I'll put some liquid chlorine in in the mean time.

I have no idea why pH has gone up. I...

7 Replies

263 Views

Last post by eswenson
Mon 10 Oct, 2016 16:47
How do I raise my pH without raising my TA?

by lizzypaulk1014 » Fri 25 Jul, 2014 16:14

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We installed our pool 2 weeks ago and I still can't get the chemicals right. I NEED HELP!!!!!! Every time I try to raise my pH slightly, my TA goes...

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Aeration is the key
Adjust the return water so that it sprays into the air, maybe fit some pipe into the jets to get it out of the water
I use a...

6 Replies

5497 Views

Last post by Denniswiseman
Thu 29 Sep, 2016 11:27
Muriatic Acid did not lower Alkalinity
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by andre747 » Mon 29 Aug, 2016 18:46

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Hi everybody. I need help. Here are the steps i did. Took over a pool with high chlorine, no alkalinity, no PH, no CYA and hard 400 ppm. Waited for...

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Don't raise the CYA untill any drain and refill is done
You may wish to give Muriatic acid another go as your previous dosing may have thrown things...
11 Replies

521 Views

Last post by Denniswiseman
Fri 09 Sep, 2016 12:51
Alkalinity targets different

by lmelanson » Sun 21 Aug, 2016 14:17

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Hi, I am new to your site. Received the TF 100 and started testing. I have owned the pool for 7 years so I am not new to water chemistry but am a...

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BioGuard largely promotes use of Trichlor tablets which are net acidic so need a higher TA level to have more carbon dioxide outgassing which raises...

5 Replies

157 Views

Last post by chem geek
Tue 23 Aug, 2016 06:40
Pool water greenish?

by jkik » Wed 29 Jun, 2016 19:23

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Okay so my pool water looks clear green. Could it possibly from the chlorine and blue liner?? I have a 3300 gallon above ground pool that's is 14 x...

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Reduce your TA with muriatic acid and aerate to raise your PH if it drops significantly
What is your CYA as an excessive amount will reduce your...

2 Replies

280 Views

Last post by Denniswiseman
Thu 18 Aug, 2016 08:52
Extremely High Phosphate count
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by Laura » Sun 02 Nov, 2008 14:06

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We have had a problem with phosphates in our pool since June. There was yellow and green alge in the pool at that time. We treated it as per our...

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What are your levels? If your CYA is high it will use a lot of chlorine
30 Replies

117124 Views

Last post by Denniswiseman
Fri 22 Jul, 2016 13:17
low TA high PH...... should I be concerned?

by youngskywalker » Wed 06 Jul, 2016 21:32

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10,000 gal cement plaster pool with Spa spill over. Salt water chlorine generator. Taylor 2006 test kit, plus others.

CH 375
Chlorine 3
Borate 40...

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As I wrote before your CSI is very low and with a plaster/cement pool that means that material may slowly dissolve in that water. If you want to keep...

6 Replies

438 Views

Last post by chem geek
Sun 17 Jul, 2016 01:38
High Alkalinity/Low PH

by kelcal » Tue 14 Jun, 2016 11:20

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Our pool chemistry has been off since we opened the pool - I suspect it was messed up when we closed it too. Our alkalinity is around 200, and the PH...

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See this link .

3 Replies

1258 Views

Last post by chem geek
Thu 16 Jun, 2016 23:47
muriatic acid in India

by memelet » Sun 31 Jan, 2016 03:22

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I'm from the US now living in India. My house here has a fairly large pool (10m x 20m). The pool "experts" here consist of people of who...

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Have you tried searching online for Hydrochloric Acid
Why don't you get some one at home to post a test kit to you

1 Replies

316 Views

Last post by Denniswiseman
Sun 31 Jan, 2016 05:52
Reduce Ph level

by Honey » Sat 23 Jan, 2016 14:49

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How can I reduce my pool water ph level, currently it is almost 8.9.

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You should check the pH a few hours after adding the acid to check how much the pH has been reduced.

3 Replies

286 Views

Last post by Larry
Mon 25 Jan, 2016 02:34
Chronic Low TA

by Alexania » Thu 17 Dec, 2015 05:51

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Hey, hoping someone can offer some advise.

We installed a (15,000l) fibre glass pool about a year and a half ago. At the time of installation my TA...

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Trichlor is ACIDIC and will lower the TA over time. For every 10 ppm FC added by Trichlor, it also increases CYA by 6 ppm and lowers TA by 7 ppm....

4 Replies

380 Views

Last post by chem geek
Sun 20 Dec, 2015 17:58
Need to understand TA vs pH!
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by cretanrunner » Sun 09 Jun, 2013 11:05

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I've read various posts around this subject, but am still confused, so I'm hoping someone will explain so that I can understand the theory here.

My...

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Thanks for the clarification Richard.
11 Replies

6336 Views

Last post by Larry
Fri 06 Nov, 2015 06:16

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