Efficient pre-filtration The Tub First Filter captures soap, oil and other particulates before they reach the main filter, reducing the need for clarifiers and cleaners while keeping crystal clear water. Easy to clean and maintain Designed for convenience, this filter can be easily cleaned weekly for optimal performance. For best results, replace every three months based on spa usage. Broad spa compatibility This replacement filter is compatible with multiple spa brands, including Maax and Cooperage, making it a versatile choice for your spa maintenance needs. Optimal size for simple installation With a diameter of 190.5 cm, this filter fits seamlessly in your skimmer basket. Simply click in for a hassle-free setup. Use scenarios - Home hot tubs where users apply body oils or soaps and regular maintenance is needed to keep water clear - Spa facilities with higher usage, needing easier maintenance and fewer clarifiers - Seasonal maintenance or replacement cycles to maintain crystal clear water with minimal downtime