Most hot tub filter cartridges are only effective on particles larger than 30 milligrams. The very smaller particles are the ones you can’t see, but they are the ones that make your water look cloudy. Clarifiers are the most popular product on the market to clear your water. They are synthetic coagulates that attack these tiny particles and bind them together into a larger mass, so that they can be captured in the filter cartridge. Problem is many of these larger mass particles stick float to the water surface and stick to the acrylic surface creating what many people refer to as a scum line.
HT Natural & Clear is a natural enzyme that breaks down and kills the organics and contaminants in the water, purifying the water, and getting rid of the cloudiness while dramatically reducing the chance of creating a scum line.