Water maintenance is a breeze with our built in 2-step water filtration system and non-chlorine based sanitizer. The Edge Tub has an external strainer to catch any hair, lint, or debris from entering the unit, and a 20 micron filter for extra purification. Adding Oxidizer weekly and Sanitizer as needed ensures the water will stay clear and sanitary. The high-flow water pump also circulates 100% of the water every 15-25 minutes.