Dry Acid (2024)

FAQs

How often should I add dry acid to my pool? ›

Never add dry acid more than 3 times per day.

TO LOWER THE pH USING DRY ACID: Add .

75 ounces to lower the pH from 7.8 to 7.6; add 1 ounce to lower the pH from 8.0 to 7.8; add 1.5 ounces to lower the pH from 8.4 to 8.0. Water may be retested and additional acid, if needed, may be added in 15 to 30 minutes.

Dry acid is a much milder acid than muriatic acid and when diluted in water will have almost no effect on the Total Alkalinity of the water while lowering the pH. This will allow you to maintain the Total Alkalinity level, which will make it more difficult for the pH to change, thereby reducing your pH fluctuation.

If the water acidity is too high, it will result in the corrosion of metal pool equipment and etching on various surfaces. It can cause skin irritation or burns, eye irritation, hair damage, and harm to swimmers' health.

Don't ever shock the pool immediately after adding acid to the water.

Sodium bisulfate, or dry acid, comes in a powder form and is more mild than muriatic acid, so it's a little safer to use, but many pool owners use generic muriatic acid as a substitute for pH reducers.

It is best to pre-dissolve the dry acid in a bucket and then once it is dissolved to pour it around the perimeter of the deep end with the pool on and running for at least 3 hours minimum.

Dry Acid, or Sodium Bisulfate, is a granular form of acid and it used to lower pH, maintain balanced water, and total alkalinity in swimming pools and spas/hot tubs.

If you have a swimming pool in your backyard, muriatic acid can be integral towards making sure that the proper water chemistry is maintained. The main reason that muriatic acid needs to be added into pool water is because it can help reduce pH levels that have become too high.

How long to run a pool pump after adding dry acid? ›

The pump should run for at least half an hour to thoroughly mix the muriatic acid as it diffuses around the pool. If you'd like to aerate the pool longer and increase the pH a bit, keep running the pump or use an aerator/air stone to oxygenate the pool water.

Follow these simple steps to correctly add different types of chemicals to the pool. First things first, when adding any chemical to the pool, always make sure your pump is running and automatic cleaner is removed.

Most commercial pH decreasers, like pH Down or pH minus, are made with sodium bisulfate, also known as dry acid. They're safer and less corrosive to use than muriatic acid, but they generally cost more. Use this chemical to lower just the pH level in your pool water.

High pH, alkalinity and calcium hardness

To fix high pH, dose your pool with Dry Acid so that you reach an ideal pH level of 7.2-7.6. High calcium hardness levels also lead to cloudy pool water and calcification.

The amount of acid you need to add to balance your pool pH levels depends on factors such as the pool's size, current pH and Total Alkalinity level, and the type of acid you use. A general rule of thumb is to add one quart of muriatic acid per 10,000 gallons of water to lower the pH by 0.1.

When adding pool chemicals, waiting around 10 to 20 minutes between additions is recommended. It's important to understand that pool chemicals are made of strong gasses and concentrated materials.