How are Ph levels of a swimming pool tested?
Usually the ph is tested with a phenol red indicator but litmus paper can be used
Soda ash (sodium carbonate), sold as pH Increaser, pH UP or Arm & Hammer Washing soda, will raise swimming pool pH levels. You can also use borax, sold as 20 Mule Team Borax. How to maintain those levels varies from pool to pool. If you are chlorinating with trichlor tablets, which are acidic, you'll need periodic additions of soda ash or borax to compensate for the acidity in that form of chlorine.
That Acid is called Muriatic Acid. You put it in your swimming pool to lower the PH of the water. At lower PH Levels, the chlorine you use to sanitize the pool is more active, as a disinfectant. You MUST be careful not to put too MUCH Muriatic Acid in your pool! PH that is too low will create potentially deadly fumes, so test your water. Low pH is corrosive to plaster and metal pool…