How Much Bleach to Add to Pool?

How Much Bleach to Add to Pool

Keeping Your Pool Clean

Maintaining the pool requires using chlorine or other disinfectants to help keep the pool water free from microorganisms and other contaminants. Chlorine can form into hypochlorous acid when it comes into contact with water and can combine with different water pollutants.

It is essential to use chlorine simply because it can help remove urine, bacteria, and even contaminants like lotions, perfumes, and hair products. Eliminating these contaminants allows you and your family to use the pool safely without worrying about getting sick or skin irritation.

In some cases, instead of using chlorine, most people will opt to use bleach. Bleach is a liquid product that often contains chlorine. Although it is much more convenient, you must understand that you must use the right amounts to effectively keep the water clean.

What You Need To Know When Using Bleach

Bleach is often found in laundry products since it is mainly used to help remove stains from clothes. Bleach and chlorine are very similar, except that elemental chlorine is not made of other chemicals, and bleach can be made without chlorine.


Typical bleach can also form hypochlorous acid. Unfortunately, most bleach, also known as liquid chlorine, is made in low concentrations. They are typically made into 6% solutions since they are mainly for laundry use, while chlorine products used for the pool are in 10% or 12% concentrations.

You will have to use more products to get the proper chlorine levels in your pool water. When using bleach, stay away from scented ones to avoid contaminants, and only add water, chlorine, and a little salt into the pool.

The most significant benefit of using bleach is its chlorine content is dissolved correctly. Unlike other chlorine products, it typically does not contain any filler. You can also manually add the bleach or use a liquidator. With the help of bleach, it is much easier to maintain the chlorine levels in the pool.

How much bleach per gallon pool?

To know exactly how much bleach you need to use, you must first test the pool’s chlorine levels. You need to aim for a chlorine level of 1-3 ppm to keep the water free from contamination without having to cause swimmer discomfort or skin irritations.

Clorox is the most common bleach product for the pool, which usually has a 5.7% concentration. If you have a 30,000-gallon pool, you will have to use as much as 126 ounces of Clorox to raise the chlorine levels by two parts per million.

If you want to ensure that you will get the correct measurement, you can try to calculate how many gallons of water your pool holds. You can do this by multiplying the length in feet by the width and finally by the average depth of the pool. This will help you get the volume of the pool.

clorox bleach

You should then multiply the volume of the pool by 5.9 if you have a round pool, 6.7 for an oval pool, and 7.5 if you have a rectangular pool. This will allow you to know how many gallons of water your pool holds.

If you are shocking the pool, you will have to use ½ gallon of bleach per 10,000 gallons of water to raise the chlorine levels to 5 ppm. If you are just trying to raise the chlorine level by 2.5 ppm, you must use as much as ¼ gallon of bleach per 10,000 gallons of water.


Bleach is a very convenient alternative to chlorine simply because you can easily use it and dissolve it in your pool. Although you might have to buy a couple of gallons to sanitize your pool, you should know that if you are using bleach, you have the benefit of not adding any unwanted filler to the water.

When using bleach, you can try adding it to the pool’s deep end. But if you want it to mix easily with the water, you can put it in the pool skimmer instead. Check your pool’s chlorine levels twice a week to know if you need to use more bleach and how much is needed.

When using bleach, make sure that you are using an unscented product so you will be able to avoid causing irritations and have enough free chlorine that will continue to keep your pool contaminant-free. Always use enough bleach depending on your pool volume and the current chlorine levels.

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