- 1). Put on rubber gloves. Brush the surface algae off the tile with a soft cloth.
- 2). Pour 1 gallon of cool water in a plastic bucket. Add 1/2 cup of 3-percent hydrogen peroxide and stir with a spoon for several seconds. Alternatively, use 1/2 cup of clear ammonia.
- 3). Dip a soft-bristled scrub brush in the diluted hydrogen peroxide. Scrub the remaining algae off the stone gently with the damp scrub brush.
- 4). Rinse the mixture off the travertine with a lint-free cloth dampened in cool water. Wipe the stone dry with a lint-free towel.
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