Lowering PH with Acid

[Watermom]

Be careful not to breathe the fumes or get any on yourself.

[Jakebear]

Not sure why but it's in the Paint Department at Lowes & HD.

Yep --- it is nasty --- Also eats concrete (the lime I think)

[mas985]

Both Lowes and Home Depot in CA keep acid in the pool section. I think it depends on the area of country. In CA there are a lot of pools so it justifies having a separate pool section.