Understand Pool Alkalinity & Swimming Pool pH. Use A Swimming Pool Test Kit, Pool Acid & Baking Soda.
Swimming pool maintenance tips and spa chemistry for your inground and above ground pool maintenance.
Easily Test & Adjust Your Total Alkalinity
How To Test Alkalinity
How To Raise Alkalnity
Remember to take small steps that when making adjustments to your (TA).
You can always add more but it's a little harder to get it out.
To raise the TA for pool maintenance, I recommend sodium bicarbonate (baking soda).
If you need lower your TA by a wide margin you'll want to do it in increments, not all at once.
With the pool pump OFF and the water motionless:
This will raise the total alkalinity but take care in monitoring your swimming pool pH because sodium bicarbonate affects both the pool alkalinity and your swimming pool pH level.
You've watched the above videos. Total alkalinity is just one aspect of pool maintenance. Now it's time to get all you need. Click on the picture above to get started down the road of having a perfect pool.
Remember, this may take a few applications but you should reach the proper level. Refer to the chart to see how much sodium bicarb your pool needs.
When filling a pool, first test the total alkalinity of the fill water so you can have a good starting point. You can use pool test strips but I recommend an FAS-DPD K-2006 Taylor swimming pool test kit.
To lower pool alkalinity, either use muriatic acid (pool acid) or dry acid. Lowering the pool alkalinity may take a few applications, so patience is a virtue.
Another technique that works is a process called aeration, or "out-gassing". This technique requires you to add acid to lower both the TA and pH. then you introduce air into the pool via an air compressor, slides, waterfalls, water features, or perhaps a Shop Vac.
This creates millions of tiny bubbles which release their CO2 (carbon dioxide) and raises the pH while keeping the TA relatively lower.
If you're thinking about lowering the total alkalinity by partially draining the pool and diluting your swimming pool water, you may want to think this through.
I would say only under extreme conditions should you do this. Not only will it take longer than using muriatic acid, but you'll waste alot of water. And if it doesn't work, you'll have to start all over again and probably use more pool chlorine than necessary.
CAUTION: ALWAYS ADD ACID TO WATER, NEVER WATER TO ACID
Always take the proper precaution by wearing heavy duty rubber gloves and goggles. Or if you prefer, you may use dry acid. This is much easier and safer than liquid acid.
Contact one of your local pool cleaning services your pool alkalinity problem persists.
Remember when using pool acid and pool chlorine, safety should be your highest concern. Wearing heavy rubber gloves and goggles will minimize risk of injury.
Keep in mind, proper balance of your pool’s chlorine, swimming pool pH, pool alkalinity, and calcium hardness increaser is of the utmost importance in having a safe body of water.
You’ll also get less headaches, spend less money and time worrying, and not want to drain the pool water. This will work even with a direct source of contaminated well water, your salt water pool system and salt cells.
Alkalinity Weekly Pool Maintenance Chart
|Raise Pool Alkalinity 10ppm||40oz. (2 ½ pounds) of Sodium Bicarbonate (pump motor off and water motionless)|
|Lower Pool Alkalinity 10ppm||¼-½ gallon of acid or 8oz. of dry acid in one spot in the deep end (pump motor off and water motionless)|
|Raise Alkalinity 10ppm||2.5oz. of Sodium Bicarbonate (pump motor and jets off)|
|Lower Alkalinity 10ppm||6oz. acid (pump motor and jets off)|
Chart - Lowering Total Alkalinity Using Muriatic Acid
|Decrease||GALLONS IN POOL|
|10||2.56 oz.||0.8 pts.||0.8 qts.||1.2 qts.||1.6 qts.||2.0 qts.||1 gal.|
|20||5.12 oz.||1.60 pts.||1.6 qts.||2.4 qts.||3.2 qts.||1.0 gal.||2 gal.|
|30||7.68 oz.||1.2 qts.||2.4 qts.||3.6 qts.||1.2 gal.||1.5 gal.||3 gal.|
|40||10.24 oz.||1.6 qts.||3.2 qts.||1.2 gal.||1.6 gal.||2.0 gal.||4 gal.|
|50||12.80 oz.||2.0 qts.||1.0 gal.||1.5 gal.||2.0 gal.||2.5 gal.||5 gal.|
|60||15.36 oz.||2.4 qts.||1.2 gal.||1.8 gal.||2.4 gal.||3.0 gal.||6 gal.|
|70||1.12 pts.||2.8 qts.||1.4 gal.||2.1 gal.||2.8 gal.||3.5 gal.||7 gal.|
|80||1.28 pts.||3.2 qts.||1.6 gal.||2.4 gal.||3.2 gal.||4.0 gal.||8 gal.|
|90||1.44 pts.||3.6 qts.||1.8 gal.||2.7 gal.||3.6 gal.||4.5 gal.||9 gal.|
|100||1.60 pts.||1.0 gal.||2.0 gal.||3.0 gal.||4.0 gal.||5.0 gal.||10 gal.|
Chart - Raising Total Alkalinity Using Sodium Bicarbonate (Baking Soda)
|Increase||GALLONS IN POOL|
|10||0.14 lbs||0.7 lbs.||1.4 lbs.||2.1 lbs.||2.8 lbs.||3.5 lbs.||7 lbs.|
|20||0.28 lbs.||1.4 lbs.||2.8 lbs.||4.2 lbs.||5.6 lbs.||7.0 lbs.||14 lbs.|
|30||0.42 lbs.||2.1 lbs.||4.2 lbs.||6.3 lbs.||8.4 lbs.||10.5 lbs.||21 lbs.|
|40||0.56 lbs.||2.8 lbs.||5.6 lbs.||8.4 lbs.||11.2 lbs.||14.0 lbs.||28 lbs.|
|50||0.70 lbs.||3.5 lbs.||7 lbs.||10.5 lbs||14.0 lbs.||17.5 lbs.||35 lbs.|
|60||0.84 lbs.||4.2 lbs.||8.4 lbs.||12.6 lbs.||16.8 lbs.||21.0 lbs.||42 lbs.|
|70||0.98 lbs.||4.9 lbs.||9.8 lbs.||14.7 lbs.||19.6 lbs.||24.5 lbs.||49 lbs.|
|80||1.12 lbs.||5.6 lbs.||11.2 lbs.||16.8 lbs.||22.4 lbs.||28.0 lbs.||56 lbs.|
|90||1.26 lbs.||6.3 lbs.||12.6 lbs.||18.9 lbs.||25.2 lbs.||31.5 lbs.||63 lbs.|
|100||1.40 lbs.||7.lbs.||14.0 lbs.||21.0 lbs.||28.0 lbs.||35.0 lbs.||70 lbs.|
If you have a large commercial swimming pool, 80,000 - 125,000 gallons, I would recommend to not use more than 1 - 1.5 gallons gallons at a time because if you go too low in one shot, you're going to have another swimming pool problem on your hands.
This will help reduce your weekly pool maintenance cost.
Pool Chlorine - Swimming Pool Chlorine & Pool Chlorine Tablets Are Good Water Quality Indicators For Pool Water Maintenance
Chlorine Demand - Chlorine Demand and swimming pool water chemistry.
Chlorine Tablets - Chlorine Tablets & Pool Water Maintenance.
Muriatic Acid - Muriatic acid and swimming pool chemistry.
Pool Water Testing - Pool water testing and the best information on swimming pool test kit.
Pool pH - Understanding swimming pool pH and easy pH chart for perfect pool water balance.
Total Alkalinity - Total alkalinity and weekly pool water maintenance.
Calcium Hardness - Understand Calcium Hardness & Pool Water Maintenance.
What is total alkalinity?
Pool alkalinity is the buffer of your pool water maintenance. Keeping your alkalinity between 80ppm-120ppm will stabilize the chlorine, pool pH, and calcium hardness.
When do I test the pool alkalinity?
Test your alkalinity in the late afternoon or early evening when the temperature is a bit cooler.
Where do I test the alkalinity?
Test your alkalinity in the deep end of the pool or the furthest away from the filter.
Why do I test the alkalinity?
Testing your pool alkalinity and keeping it at the proper range will help lock in the rest of the chemicals; i.e. chlorine, pool pH, and hardness.
It will lessen pH “bounce”, corrosion of metal parts, scaling in your pool, and skin and eye irritation for your swimmers.
How do I test the pool alkalinity?
Follow the manufacturer’s directions while you’re using your FAS-DPD K-2006 Taylor swimming pool test kit. Test strips are easy but cannot give you a more accurate measurement than the K-2006 kit.
Many times it’s just adding an alkalinity indicator that turns the sample water green. Then simply count the drops until the sample turns red. If you can count, you can do this test with machine-like precision.
Remember to turn the pump motor OFF when increasing or decreasing your alkalinity or use the aeration technique
Go To:Swimming Pool Care > Swimming Pool Chemistry > Pool Alkalinity
Click below to see contributions from other visitors to this page...
Chlorine pH and Alkalinity Readings
I have a 12ft x 30in pool its been fill for three weeks now and i cannot get the chemicals levels up to were they should be my water has went slightly …
Low Total Alkalinity & Low pH with Stabilizer
Can my total alkalinity be low and my pH both be low at the same time? How do I fix? I have an 18,000 gallon in-ground pool. Thanks for the …
Total alkalinity White Flakes & pH Up Levels For Winter
How can I raise my Alkalinity and not raise my PH? My PH is perfect @ 7.2-7.4 and alkalinity is low... 50. If I add an alkalinity increaser or baking …
Why Pump Off To Add Acid Adjusting Alkalinity
Why is the pump motor supposed to be turned off when adding acid? It seems like you should be circulating the water to distribute the acid rather …
TA Water Sample Did Not Turn Green With gtts Added
We are opening new Above Ground Pool, 13,500 gal. I use shock and Cl is 2 with HTH test kit pH is 7.5. When I add alkalinity gtts the sample does not turn …
Alkalinity Test Turns Pink/Red
I used a test kit to test my water. The sample turned pinkish red with just the alkalinity indicator drops. Does that mean my alkalinity is 0? I …
Why Should Sodium Bicarbonate Be Added Moderately Over Time To Reduce TA & Not All At Once
I read in several places that when adjusting TA, it should be done with some degree of patience (1kg per 50,000 litres of water over 4 days), however, …
High Alkalinity & Cyanuric Questions
I recently took over care of a 37,000 gal pool. I'm new at this & the training I was given is limited at best. My last test had a pH of 7.5 & alkalinity …
Which to fix first? PH level or Alkalinity Not rated yet
Chlorine residual - 0ppm PH - 8.2+ Alkalinity - 50ppm Hardness - N/A Cyanuric Acid - N/A Cartridge filter system with 1hp motor on pump. 24', 52" …
Why Does Alkalinity Keep Going Up & High TA Not rated yet
I have a 30,000 gallon salt water system with a cartridge filter. My pool is two years old and I've always had problems with the alkalinity. It's …
Lower Bring Down Total Alkalinity Pool Chemicals Are Wrong Not rated yet
I just tested the alkalinity in my inground pool. Holds 20,000 gallons. It took 12 drops for the water tester to turn red, then it said to multiply …
Click Here To Learn How This eBook Can Save You TONS Of Time & Money
Click Here To Learn The Best Way To Clear Up Your Pool
the water was crystal clear but upon skimming the top we noticed a white slimy film completely covering the pool liner.
My pool is a 26,000 gallon above ground vinyl liner. around 7/31/2014 the cya raised to 113
Will raising the pH level and adding Superfloc get rid of algae?