[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:ruleyourpool@gmail.com Facebook: @ruleyourpool YouTube: @rule-your-pool Rss Apple Podcaster →