Maintaining Glass Mosaic Tile

Sorry, life got busy for a bit. Lost this thread in my list.

I think your water parameters are fine and as others have alluded to, keeping your CSI between -0.3 and 0 will help to reduce scale. The one thing that its going to bite you, like all pools, is evaporation, evaporite and efflorescence. Anytime water flows over tile and then stops, the remaining water on the tile surface will evaporate and leave behind all of the salt and mineral scale. There's nothing you can do about that. As well, when the tile grout gets saturated with water and then the water source ceases, the water in the grout will evaporate and draw up to the surface lots of calcium and mineral scale. That tends to look like white crust on the grout lines. Again, not much you can do to prevent it.

This is where you have to figure out your tolerance for tile scale versus your desire to do lots of tiling cleaning. Glass tile can be cleaned just like the tile you have in your home but it's probably best to use a simple acid solution to clean with in a pool so your don't get any weird chemicals in the water. As for the grout, you can use a pumice stone to very gently scrap away any efflorescence that shows up but be careful around glass as pumice will scratch it. If you really want to do a lot of work, you can look for tile and grout sealer to create a more hydrophobic surface that will repel water BUT those are very difficult to apply to pool tile and not make a mess of your pool water.

It's not going to be maintenance free, I assure of that.