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
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We just got our readings. It says that the Free Chlorine and Total Chlorine is below the recommended values but the Combined Chlorine is above the recommended
I have a dark brown iron stain from a rusty bolt that the kids threw in my cement pool.
We added muriatic acid to our pool to lower the swimming pool pH level. I need to know how long after we added it to swim. Thanks for your question James