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The Daily Insight

How do you use HTH 4 in 1 test kit

Author

Andrew White

Published Apr 06, 2026

Fill the tubes with a sample of water from your pool.Drop a DPD1 tablet in the side marked Cl and Br.Replace the cap and shake until the tablet has dissolved.Match the colour on the chart on the side of the tube to get your reading for either chlorine or bromine.

How do you use a 4 in 1 test kit?

  1. Fill the tubes with a sample of water from your pool.
  2. Drop a DPD1 tablet in the side marked Cl and Br.
  3. Replace the cap and shake until the tablet has dissolved.
  4. Match the colour on the chart on the side of the tube to get your reading for either chlorine or bromine.

How much does muriatic acid lower pH?

Answer: Since muriatic acid will lower BOTH pH and alkalinity, the answer is simple. Continue adding muriatic acid (1/4 gallon at a time) let circulate for a few hours and retest until the pH is at the correct level (7.4-7.6).

How do you read 6th HTH strips?

Simply dip the test strip 18″ in the water for 2 minutes and in 20 seconds your results are ready to read. Compare the strip easily on the back of the bottle or even better TEXT a photo to HTH123 and get the results!

What should pool readings be?

The recommended level for swimming pool water is 80-120 ppm. When pool water is found to be low in alkalinity (below 80 ppm) it is recommended that this level be increased.

How do you use HTH acid?

Pre-dissolved 1liter of HTH® Easy Acid in 5 liters if water. Pour into one spot in the deep end of the pool. Switch the pump on and continue with normal filtration. Check the TA level after 12 hours.

How do you lower chlorine levels?

  1. Stop Adding Chlorine and Start Swimming. …
  2. Use the Sunshine. …
  3. Heat the Pool Water. …
  4. Dilute the Pool. …
  5. Use Hydrogen Peroxide. …
  6. Use a Chlorine Neutralizing Product. …
  7. Try Sodium Thiosulfate.

Are HTH pool test strips accurate?

The test strips are not accurate at all and some come missing the little test pads.

How do you use Flowclear test strips?

To use the test strips, dip them into your pool water and remove immediately. Hold the test strip level for about 15 seconds, and then the colors should appear for each chemical value. You can then compare the colors with the included chart on the bottle of the strips.

How much muriatic acid should I use?

First things first: You need to know how much muriatic acid to use. For an average-sized pool (think 15,000 to 20,000 gallons), you’ll need about a quart of muriatic acid. If your pool is much larger or much smaller than average, you should check with your pool professional.

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When can I test after adding muriatic acid?

Check the pH Levels Again Now that you’ve added the muriatic acid to your pool, it’s time to check the pH levels again. Keep in mind that this testing should occur only after a few hours have passed.

How long does it take for muriatic acid to lower pH?

It will take 24 hours for the muriatic acid to react with the existing balanced pool water. Remember never to pour muriatic acid into your pool. Dilute part of the muriatic acid in a bucket of balanced pool water, and then pour it into your pool. “Dilution is the solution,” Dukes says.

How do you read HTH pool strips?

Just dip your test strip in the pool water and see results on the color strip in seconds. Compare it to the color strip on the side of the bottle, or text a photo of your test strip to 484-123 and get personalized pool instructions in seconds.

What do I do if my spa alkalinity is too high?

If the alkalinity in your hot tub is high, it can cause green water because it reduces the effectiveness of your sanitizer (chlorine, bromine, etc.). So to lower alkalinity in your hot tub, add pH Decreaser or soda ash (sodium bisulfate).

How do you read Free Chlorine strips?

Dip your strip into a glass of water (not your sampling container!) and move it back and forth for 30 seconds. Alternatively you can hold it under a stream of water for 10 seconds. The pads will change color to indicate Total Chlorine (white pad on end) and Free Chlorine (yellow pad).

How long do you dip the pool test strips?

Dip the test strip in the water for a couple of seconds, then wait 10 to 20 seconds for the strip to change colors. Compare the test strip to the color chart on the package. Be sure not to wait too long, this may cause the colors to keep changing and may give you an inaccurate reading.

What do you do if chlorine is high?

If your total chlorine level is high, you will use a non-chlorine shock; if it is low, you will use a chlorinated shock. As a rule, you will need to raise free chlorine to 10 times your combined chlorine to hit what is known as “break point.” Therefore, it is good to deal with combined chlorine while it is still small.

What is a good total chlorine level?

For a healthy pool, the free chlorine level should be between 1.0 and 3.0 parts per million (ppm). The Centers for Disease Prevention and Control recommends pH 7.2–7.8 for pools and hot tubs.

How do I know if my pool needs chlorine?

If the chlorine smell is very strong, however, you may soon spot “red-eyed” swimmers emerging from the pool. That’s when the pool water is assumed to have “too much chlorine” in it. Ironically, a strong chemical smell around the pool and “swimmer red eye” may be signs that there is not enough chlorine in the water.

How do you increase ppm in a pool?

If your pool is larger or smaller, you’ll need to adjust your math. A rule of thumb is 1.5 lbs. of baking soda per 10,000 gallons of water will raise alkalinity by about 10 ppm. If your pool’s pH tested below 7.2, add 3-4 pounds of baking soda.

What should my pool hardness be?

Calcium hardness must be actively managed—along with pH and total alkalinity—to keep water in proper chemical balance. Current industry standards call for maintaining calcium hardness in the ideal range of 200–400 ppm in pools and 150–250 ppm in spas.

What neutralizes chlorine?

Vitamin C is a newer chemical method for neutralizing chlorine. Two forms of vitamin C, ascorbic acid and sodium ascorbate, will neutralize chlorine. Neither is considered a hazardous chemical.

What is a good chlorine neutralizer?

The best chlorine neutralizer available for swimming pools is still sodium thiosulfate.

Does high chlorine affect pH reading?

High chlorine levels decrease the pH of your pool’s water, making it more acidic. The more acidic the water, the higher the likelihood of corrosion. This corrosion can affect metal piping, equipment, and the surface of your pool (tiles, liners, concrete, etc.). … Luckily, chlorine tests are very easy to perform.

What does free chlorine mean on test strip?

Free chlorine refers to the amount of chlorine that has yet to combine with chlorinated water to effectively sanitize contaminants, which means that this chlorine is free to get rid of harmful microorganisms in the water of your swimming pool.