Rain if it is acidic can lower the pH of a swimming pool.
Muriatic Acid lowers the pH level in a pool.
Buy some PH down.
add a PH reducer chemical
You can lower the PH level by using this stuff called PH Down. Go to a local pool store and ask about it.
You use muriatic acid.
By adding muriatic acid
pH range for swimming pools is normally between 7.2 and 7.6
No. You can raise the PH level in your pool with Borax. I use it.
Until the pH reaches 15.
No it will raise the pH level. You would use it if your pool was too acidic.