Target Cya Level In Swg Pool With Vinyl Liner

Hi i have an inground pool with swg and vinyl liner.

Target cya level in swg pool with vinyl liner.

Since i live in alabama we don t really close our pool over the winter. Adding salt shouldn t be an issue. Without getting deeply technical in this blog let s just say that vinyl and gunite pools have different needs when it comes to these specific values. As you can see we recommend that vinyl liner and gunite pools be treated the same with the exception of total alkalinity and calcium levels.

So the minimum fc level in an swg pool is around 4 5 of the cya level so for 80 ppm cya that s around 3 6 ppm. The 1 3 ppm fc is incorrect and we ve seen many swg pools at 1 ppm and 2 ppm fc and 70 80 ppm cya develop algae. Not sure i got it all because it s in there now. My fc is 5 ph is 7 6 and ta is 80.

0 0 2 ppm. So that would be 3 6 ppm fc if you have 80 ppm cya. Calcium for a liner pool can be a bit lower than a plaster pool in the range of 150 250 ppm. First is to have a cyanuric acid cya level of 60 80 ppm 70 80 being better and set your target fc to be at least 4 5 of the cya level.

According to the pool hot tub alliance the ideal range for cyanuric acid should be between 30 and 50 ppm parts per million when used. The main reason to have the higher cya level in an swg pool is to lower the swg on time. High levels of chlorine with low stabilizer or cya levels can fade liners but chlorine from a swcg will have. That means if your pool has 50 ppm of cyanuric acid you ll need to keep free chlorine at 3 ppm the ideal level in any case to effectively sanitize and keep algae at bay.

The higher cya level will protect the chlorine from degradation from sunlight even accounting for having a higher fc to compensate for chlorine effectiveness. Calcium hardness is also very important to the chemical balancing of your vinyl liner swimming pool. 0 0 2 ppm. Swcg is accurate and descriptive and is similar enough to swg that many people will be able to recognize it easily.

When using cyanuric acid aim to keep free chlorine levels at 7 5 percent of cya level. We actually were in the pool in march my cya is 30 and i have a little green algae which i really struggled to get rid of last summer and early fall. For owners of vinyl liner pools with plastic pipes and plastic pumps.