Acid washing rock right now. How long do I do it?

[Cleverbs]

Acid washing my rock right now. Been going for 10 mins. Was thinking 20mins. Is that long enough or to long?

 

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Once the bubbling has stopped.

 

[cowboy]

What concentration of acid did you use

 

[Cleverbs]

not enough I guess.

 

[mfinn]

I've used 2 cups of muratic acid in 5 gallons of freshwater and waited until the bubbling stopped.

 

[Cleverbs]

Well I am done this was last night. All is good now.

 

[cowboy]

For future reference 10 parts water 1 part muratic let soak till bubbles stop. Remove then rinse.