Is pebbletech or quartz better for the pool surface?

The only advantage to quartz over standard pebles is that quartz does not impart any hardness to the water. However, this is mute point compared to the evaporation that could more than double the hardness readings every season. So choose the color stone you like and enjoy your swim.

Personally, I do not like the original pebble products, as they are rough on your feet. Also, it is difficult to get a tight seal around light and returns. Therefore, you lose small amounts of water there.