How to decrease PH and keep Alkalinity the same (pool chemicals/chemistry)

-Use MURIATIC acid to:
-decrease pH
-alkalinity (does not change)
-How to use
-do NOT pour directly into pool from the bottle. It will sink to the bottom and damage ur vinyl/plaster
-pour into a bucket full of water (always pour water in first and then muriatic acid)
-pour in Deep End of pool
-brush in pool so it doesn’t sit on bottom
-Cheapest way to reduce pH
-if u have waterfalls/running water, ur ph will increase every week until it reaches a plateau. Use muriatic acid to reduce the pH but keep alkalinity the same
-Accidental Spill
-hose down area
-neutralize area with baking soda