How do you prevent a white residue line mark on the side pool tiles?

Answer 1

You are not doing a complete job when you service your pool or check the chemicals. You need a tile scrub brush assy. or the equivalent. You need to be cleaning the tile line at least weekly to prevent the scum and calcium buildup. You probably will not be able to remove the scale buildup at this point unless you concentrate on about a two foot area of tile daily until you've completed the entire tile line. k

Answer 2

Usually a mineral deposit most likely calcium.