How To Clean Pool Tile Calcium. Lightly scrape the most visible calcium buildup with the pumice stone. They appear when your pool water evaporates and leaves calcium carbonate or calcium silicate behind.
The former type is flaky and rough and requires the use of muriatic acid to remove it. Calcium carbonate will react with the acid and foam; Well, this really depends on the size of your pool.
To clean your pool tile this way, you will need vinegar, fresh tap or hose water, and a pool brush.
Get a spray bottle and fill it with a vinegar and water solution. All you need to do is heat a rag or a small towel in the microwave, pour vinegar on it and clean your pool tiles. Calcium deposits from hard water are more difficult to remove and may take more elbow grease and a longer time to clean. Use white vinegar and a scrub brush.