How to Increase Cyanuric Acid in a Pool
Cyanuric acid (CYA) is a chlorine stabilizer used to lengthen the chlorine life in the pool. The stabilizer helps to keep the chlorine at a consistent level of between 1.5 and 3.0 parts per million (ppm). The correct CYA level in a pool should be 30 to 40 ppm. If the acid level drops below 30 ppm, you need to raise that level or the available chlorine in the pool will start to dissipate and not be as effective against bacteria and algae. Does this Spark an idea?
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Instructions
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Test the CYA level in the pool water by using a CYA test strip. Place the strip in the water in the deep end of the pool. Reach as far down in the pool as you can reach and pull the strip out. Compare the strip to the color chart that is supplied with the kit. If you need to raise the stabilizer level, continue with the next steps.
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Fill a bucket full of warm water. The acid is easier to dissolve in warm water than it is to dissolve it in cool pool water.
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Raise the CYA reading 10 ppm by adding to the bucket of water 1-1/4 oz. of acid for every 1,000 gallons of water in the pool. If you need to raise the CYA level 20 or 30 ppm, add to the bucket 2-1/2 oz. of acid for every 1,000 gallons of pool water. Raise the CYA level 40 ppm by using 3 oz. of acid for every 1,000 gallons of water in the pool.
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Mix up the water and CYA with a stir stick to speed up the dissolving of the acid. When the acid is dissolved, start pouring the solution into the deep end of the pool beginning on one side and walking slowly around to the other side of the pool.
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5
Turn on the filter and run it for at least six hours to circulate the water. Retest the water. Assuming the cyanuric acid level is in range, you are set for another month before you need to test the water again.
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