Testing and adjusting your pool's pH level is an essential part of swimming pool winterization. Here's why it matters and how to do it.

Generally, pools will add hydrochloric acid, also known as muriatic acid, to lower the pH back down to the ideal level. The equipment in the pool will usually do that automatically — unless the ...

That's why the CDC and others urge pool owners and managers to test chlorine and pH levels all the time — they can change day to day based on pool usage.

Question: I have been told that if you add muriatic acid diluted in a bucket of water around the perimeter of a pool, it will lower alkalinity and pH. However, if you add diluted muriatic acid to o… ...