You’ve seen my discussion of calcium scaling in several of the previous FAQ’s. When calcium scaling occurs, it appears on every surface under the water. This includes inside your jets where it will jam them up preventing any rotation. Please see our FAQ, “Deposits (Scaling) on your spa shell” to resolve this issue.
By the way, the reason we offer a Lifetime Jet Warranty when you enroll in an Auto-Ship program with your local Serum dealer is because both Serum Total Maintenance and Swim Spa Serum will prevent calcium scaling.
