If that doesn t work try cleaning the tile with a solution of water and muriatic acid you can find muriatic acid at your local hardware or pool supply store.
Cleaning pool tiles calcium deposits.
Hard water stains on your pool tiles appear as a cloudy white residue caused from large amounts of minerals in the water such as calcium limestone.
Getting rid of calcium deposits.
Calcium scale sometimes also called limescale is a hard off white chalky substance often found on the metallic parts of water operated machinery.
For light thin calcium deposits try using a soft brush such as an old toothbrush and a solution of vinegar and water.
This can result in pits being created in the plaster that you ll have to pay to have refinished or resurfaced.
Calcium build up on your tile and plaster can be a result of hard water in your area.
Without any effort to remove calcium from pool tile calcium deposits will continue to grow and spread to other areas of the pool even potentially on the bottom.
Hard water hot days when your pool water evaporates and chemicals in your pool all cause calcium deposits in your pool.
If your pool has a high ph level and is heated you ll soon seen calcium scale building.
Cleaning tile at the waterline is one of those dirty deeds that go along with pool ownership.
Some retailers also sell.
But it is possible to restore your pool to its former glory.
That s assuming you don t want to pay a pool service company to bead blast it clean.
Read on to learn a few methods for how to remove calcium from pool tile.
What you use depends on your pool s surface.
To refresh your memory the waterline or water line is the area of a swimming pool or spa where the water meets the tile or the fill line not that there s an actual line.
The best ways to remove calcium carbonate is to use a calcium releaser cleaner preferably an acid free product so it doesn t ruin the finish of the pool tile or glass.
That foamy looking white stuff becomes hard as a rock and if not treated.