Get a gallon of miratic acid and a pound of baking soda. Put gravel in the tank with the acid. shake (a lot). empty and rinse. add the baking soda and some water and rinse again. Dry the inside with a hair dryer.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
