Vivid acid stains react with concrete to produce a color that will not peel, chip or fade. The stains leave little residue making clean up easy. Vivid acid stains are available in 1-gal. jugs, 5-gal.

TOWARD the close of a recent afternoon, we calibrated a cleaned, dry 5-gallon carboy by pouring in successive litres of distilled water. During the next morning, we found that the bottom 13 ...