Foggy water is an annoyance for any spa owner. Baracuda Spa Clarifier is used to clear cloudy water and helps prevent scum on the waterline of your spa. Baracuda Spa Clarifier clears cloudy water, improves filtration and helps to prevent oils and scum from forming at the waterline. It helps improve filtration and is safe for any type of spa with soft or hard water. Always follow the instructions on the package.