Does a high concentration of chlorine lower the pH? How about 200 ppm of chlorine?

tommytman

using chlorine in a spa will tend to drop the pH requiring frequent adjustment. I switched to a Copper system that works great...it is called pristine blue.

Robnjr

200 PPM chlorine??? Wow, normal is 1-3. 200 is going to cause equipment damage if left that high for a long time. And I sure wouldn’t go in water with such high chlorine!
Chlorine forms HCL (hydrochloric acid) when mixed with water, so it will lower your pH, especially at 200 PPM!

I recommend a UniClor or similar chlorine generator system if you have a pool: I’ve has one now for 10 years, and people can’t believe there’s chlorine in the water. I keep the PPM at 1, since its PURE gas chlorine, it’s very reactive, and little is needed. And the only other chemicals you need are salt, acid, baking soda, and stabilizer, and shock (done only twice a year): total “chemical” costs per year on a 25000 gallon pool: less than $75….