Thanks divnkd101!

The crystalization is occuring just along the grout lines of the spa but no where around the pool. In addition, the crystals are all around the spa, even where there is no water (back side). This all started within a month of the pool opening when we were running the filter 12 hours a day. This is what concerns me the most.

Regarding the tile, we've tried everything the pool supply companies have thrown at us but nothing works. It's almost like a permanant crust on the tiles. UGH!

I've sent an email to the pool builder asking him to come back out to take a look at some of these things. I would feel a lot better if I had an independant inspection done of the pool.

Thanks for the input!