Try 1491 Acid which is user friedly more so than Muratic and safer. Still a chemical hazard namely if it gets under a finger nail so always where chemicla resistant gloves.
E.C.S. uses it also to clean 20 yr old funck out and of car wash walls with great sucess.
Well also sell it , per 5 gallons, here in Memphis Tn.
For More Imformation please E.Mail.
James E. Vinson Jr. E.C.S.
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