eep Cleans Filters Naturally Enzymes Break Down Oils & Lotions Fresh Citrus Scent Safe For All Pleated Filters Economical & Non-Foaming Eco-Friendly & Non-Toxic Safe with Any Spa Program Makes 64 Gallons of Cleaning Solution 16Oz The Natural Hot Tub Company Filter Soak Deep Cleans Filters Naturally Your filters are designed to remove visible debris and impurities. Cleaning your filters regularly is the most important maintenance you can do to minimize the need for additional chemicals and to maintain clean water. Once weekly is what is recommended based on moderate usage. Every 2 months you should deep clean the filters using the Natural Hot Tub Company’s Filter-Soak. This all natural filter cleaner uses the natural power of enzymes with citrus to clean your filter(s) without the need for harsh chemicals. The enzymes break down oils and lotions that have adhered to the pleats. One bottle will last up to one year.