Hi all- quick question-
If I go up with the dial to increase the chlorine, will the CYA go up as well?
If I go up with the dial to increase the chlorine, will the CYA go up as well?
Yep. Every 10 ppm FC you add via pucks, you also add 6 CYA. Doesn't matter how fast the pucks dissolve or how big the pool is; that's just the composition of trichlor.
It will slow down, but the ratio is the same no matter what. The FC will get used up killing nasties or oxidizing organic wastes and leaves or just break down in sunlight, but the CYA will live on.Ugghhh- thanks. Will it decrease if I lower the dial?
I see an SWG set up in my future....
there are other options, but each has its pluses and minusesI see an SWG set up in my future....
It will slow down, but the ratio is the same no matter what. The FC will get used up killing nasties or oxidizing organic wastes and leaves or just break down in sunlight, but the CYA will live on.
You add more CYA via pucks, so the CYA goes up, which means you need higher FC levels, so you add more pucks, which adds more CYA, which means you need higher FC levels, so you add more pucks, which adds more CYA, which means you need higher FC levels, so you add more pucks, which adds more CYA, which means you need higher FC levels, so you add more pucks, which adds more CYA, and eventually your pool gets dull, cloudy, or green, and the pool store tells you you have high TDS so you need to drain, and then you start the vicious cycle all over again. Or we tell you you have high CYA, so you need to drain.
Once you've realized you've dug yourself into a hole, it's time to stop shovelling.
Read through ABCs of pool water chemistry to get a better idea of how pool chemicals function. Keep in mind that dichlor and trichlor contain CYA, and calcium hypochlorite contains calcium. Both CYA and Calcium (CH) are needed in pools, but too much will cause problems. The only way to get rid of excess CYA or CH is to drain and replace water.