Need more information.
Is it the inline frog, floating frog, or just the frog mineral stick? Are you using chlorine or bromine with it? What is the usage like, heavy or light? What are the rest of your readings (ph, alkalinity, etc) at? Cloudy water is usually caused be either lack of sanitizer and/or inadequate filtration. Does the spa have a 24hr circulation pump or is it programmable filtration and if programmable how long is it set to run?