Bitofact on Instagram: "Some resorts use special pool-safe chemicals like copper sulfate, titanium dioxide, and organic blue dyes to make their water look brighter and more tropical 🌊✨ Copper sulfate gives the water a turquoise tint while also preventing algae growth, titanium dioxide reflects sunlight to create that crystal-clear sparkle, and organic blue dyes enhance the natural color of clean water. Together, they give pools and lagoons that perfect “vacation blue” you see in resort photos —