Reduces alkalinity of swimming pool water (softens hard water)
Hydrochloric acid is most commonly known as muriatic acid and is used to lower pH in pools
Add muriatic or hydrochloric acid.
Most likely not.
You can add dry acid to your pool when your pH is above 7.8
Usually you would add muriatic acid to adjust the pools acid level.
When you add acid to a swimming pool it actually decreases the pH level you add soda ash to increase the levels http://sacpoolservices.com
Remove some water in container (10-20%) and add new water. example: pump water high in cyanuric acid out of a swimming pool and the add fresh water to the pool.
To raise the pH of your pool you add soda ash (sodium carbonate). To lower the pH of your pool add muriatic acid (hydrochloric acid) or sodium bisulfate. You should always add chemicals with the pump running and check your levels again once the newly added chemicals have been circulated around the pool.
Hydrochloric Acid
H3+
you do it for cabonates
It is safe to swim after adding hydrochloric acid to swimming pool. but in a small quantity like for a pool just a liter of dil. HCl (0.1N) . But if you use conc. HCl , then there may be chances of skin burn or blisters etc. to the skin. It mainly depends on concentration. and amount of water is added. DO NOT ADD conc. HCL to the water. There will the chances of bursting.