[00:00] - Intro [01:00] - What is natural stone? [02:42] - Calcite is a dense form of calcium carbonate [06:24] - Aggressive water seeks calcium, even in natural stone [08:04] - Other natural stones that contain calcium [11:22] - Closing ______________________________Connect with us! Realize your full potential.Watershape University®Water chemistry questions?Orenda®Questions? Comments? Or apply to sponsor the show:[email protected] Facebook: @ruleyourpoolYouTube: @rule-your-pool