If you are treating larger stains or decided to buy a liquid acid sprinkle the acid evenly around the pool.
Citric acid wash for pools.
Use a half a pound of vitamin c for every 10 000 gallons of water.
Pump the mixture into a bowl using a submersible pump.
The acid wash is applied from a watering can used for flowers.
An acid wash would likely remove it you can test by lowering the water level down below the first step and pouring a 50 50 acid water mixture from a flower watering can over the step scrubbing briefly and hosing off within 60 seconds.
A citric acid wash is most effective on a swimming pool that has been cleaned with all debris removed after it is drained.
In your five gallon bucket add one gallon of acid to one gallon of water never the other way around.
9 kg of soda.
4 1 out of 5 stars 105.
Apply soda ash to the acid puddle scrubbing the mixture with a pool brush.
For citric acid for pools.
You will need to use 2 lb.
Wet the sides of the pool.
Mix it gently with a mixing stick if you need to.
Rinse out the bowl.
Fill the can with 1 gallon of water and then add 1 gallon of citric acid always in that order.
Pour water over any remaining.
When you get the ascorbic acid in the water you can turn on the pool pump and let the filters circulate the water for about a half hour.
If it works an acid wash would be a good next step.