POOL TILE MAINTENANCE: Oceancare Products is an industry leader in the protection and maintenance of pool tile; Developed to be safe on even the most sensitive of tile finishes, these products can clean, protect, and renew your pool tile Mineral Acid-Free Removes Calcium and Efflorescence Use With All Types of Porcelain, Ceramic and Glass Tile A mineral acid free cleaner that removes the nasty, crusty calcium deposits and efflorescence from pool tile, shower doors and plumbing fixtures. Calcium deposits are removed through the use of advanced acid-mimic technology, which targets mineral deposits without acid damage to glass, porcelain and ceramic tile surfaces or most metal finishes.