Removing pool stains using ascorbic acid is well-regarded as a robust solution.
It will work well and it’s not going to damage the pool.
To do this the right way, it’s important to understand how to use ascorbic acid for pool stain removal.
To use ascorbic acid for pool stain removal, start by turning off the pool pump and then pour 1 pound of ascorbic acid per 10,000 gallons of pool water. Once it’s poured, let the acid settle overnight. After the wait, turn on the pump and then scrub the sides.
This will get rid of the pool stains using ascorbic acid and it is not going to harm the pool walls. Always account for this when trying to do things safely.
This guide is going to show you how to use ascorbic acid for pool stain removal.
Table of Contents
Steps On How To Use Ascorbic Acid For Pool Stain Removal
1. Turn Off The Pool Pump
Using ascorbic acid for pool stains is a good idea but you will want to make sure the pool pump is turned off beforehand.
This is to make sure the ascorbic acid has time to settle.
You will not want the pool pump to be running as that is going to interrupt how the acid works in the pool. Before pouring in the acid, it’s best to make sure the pool pump is turned off and things are working as required.
It’s important to account for this if you are looking to do things patiently. It’s the only way you are going to feel comfortable with the results.

2. Add 1 Pound Of Ascorbic Acid Per 10,000 Gallons of Water
Now, it’s time to begin working on pouring in the ascorbic acid in the swimming pool.
How much should you use?
You will want to maintain a specific ratio to ensure there’s not too much ascorbic acid in the pool. This ratio is going to be one pound of ascorbic acid per 10,000 gallons of water in the pool. You should have a rough estimate of how much water is in the pool beforehand.
Of course, this does not have to be precise.
You can vary a bit but looking to stay close to this ratio is going to lead to appropriate results without ruining the pool water.
While ascorbic acid removes pool stains, you do not want too much. This is going to harm the pool water and you are going to have issues with the pool walls too.
3. Let It Settle Overnight
After you have got the ratio right and poured the ascorbic acid in, it is time to start the waiting process.
Do not rush this.
You do not want things to get to the point where you are not letting the acid do its job. You have to be patient enough to make sure the water is clean.
In general, this is going to take at least enough time for you to wait overnight. If you are not doing this, you are not giving the ascorbic acid enough time to manage the stains.
Some will decide to wait 6-8 hours and this can work for minor stains. Otherwise, you should be waiting overnight to let the acid settle.
After you wake up in the morning, you will then have given the acid time to get to the stains and make them easier to scrub.
4. Turn On The Pool Pump And Scrub The Sides
This is one of the most important steps to account for.
You will only have loosened the stains that are on the pool walls. It’s still essential to get rid of them and the best way to do this is with a brush.
You will need a pool brush to begin scrubbing the side walls.
In general, you will want to turn on the pool pump and let the water flow. As it flows, you are then going to have an easier time scrubbing the stains that are bothering you.
When you are scrubbing the stains, it is best to be deliberate and make sure you are getting all of them. This is the best time to work on the stains as the acid will have done its job.
Final Thoughts
This is the way to use ascorbic acid for pool stain removal.
To use ascorbic acid for pool stain removal, start by turning off the pool pump and then pouring 1 lb of acid per 10,000 gallons of water in the pool. This will lead to excellent results after the acid settles overnight. Once done, turn on the pool pump and scrub the sides.
This is how you are going to get the pool stains out of the way.
It is not easy to get rid of pool stains but this is one method that is going to work like a charm. Ascorbic acid is easy to use and works wonders.