Rust stains on quartz plaster.

[@TexasJohn205]

Genius! So is that 9 parts muriatic acid and 1 part dish soap? I have two stains that annoy me.

[@mdepfl]

Does anybody read the description anymore?

[@mchaelhron279]

No.

[@myoneblackfriend3151]

What was used to treat the stain?

[@deependfrank]

Yes, mixed with just a little dawn soap applied directly to the stains. It is very little. Less than 2 cups of acid and I can remove 80-100 of these kind of stains

[@robertbrinn2567]

looks like you were using a syringe. but what was in the syringe? and what did you use to rub it with?

[@deependfrank]

Muratic acid with a dab of dawn dish soap. The syringe is a dye test syringe with extension tube

[@asadalsalihi3315]

Please describe what did you use for that?

[@deependfrank]

I use a dye test syringe with the extension tube to apply muriatic acid with drop of Dawn dishwashing soap to help it hold in place.

[@mattcervantes4545]

What are you rubbing the stain with after you apply the acid ? Is that pumice stone ?

[@deependfrank]

It is a course sponge. I do not like using pumice when I dive. It leaves too much debris in the water.

[@mchaelhron279]

@@deependfrank It looks like The Stain Eraser that you can buy in a good pool supply store.

[@jeffknudson6436]

Hey Goob, what was used to remove the stain?????????????

[@deependfrank]

Goob ? :) muratic with a touch of dawn dish liquid. Syringe is a dye test syringe. The extension tube makes it perfect