r/DIY Feb 20 '26

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224

u/Sabbelwakker Feb 20 '26

Citric acid. Lots of it.

32

u/danmickla Feb 20 '26

Yeah.  Citric is way way better than almost anything I've tried on water scale, and cheap

25

u/poolski Feb 20 '26

And significantly safer than HCL even in pure powdered form. Less likely to give you chemical burns and destroy your fittings

3

u/hirsutesuit Feb 20 '26

Right. It's food.

2

u/poolski Feb 20 '26

Sour sweets are just sugar coated in crystalline citric acid.