Total Cleanse Gel, Hot Tub Cleaner, Purge Flush, Works with Both Indoor Outdoor Hot Tub Spas, Clean Pipes Jets Gunk Build Up, Purges 400 Gallon Water Tub 4 Times (2 oz) BRAND NEW ITEM FREE SHIPPING DEEP CLEANING HASSLE-FREE MAINTENANCE: Using our serum will eliminate the hassle of purchasing and maintaining tub cleaning products. Our Hot Tub Serum performs a Powerful Deep Clean, cleaning the water to super clear, reduces sanitizer decay rates, extra sanitizer mileage softens water for debris separation, and eliminates organic plumbing and jet-bio contamination. HOW TO USE: The way to use this serum is every week. Add one ounce of serum per 100 gallons of water present in the tub. The serum works well with bromine, ozone, enzymes, chlorine, mineral sticks, and other chemicals that you might use. ENHANCES FILTER EFFICIENCY: You'll be happy to know that this Hot Tub Serum prevents damage and protects all the tub components. It also increases filtration efficiency for better flow. This serum is time-tested for weekly hot tub maintenance, saving you lots of money on cleaning products or professional care. So, be ready to enjoy the benefits of hot water therapy. COST-EFFECTIVE, MONEY-SAVER: Our hot tub serum helps you cut down on costly repairs or replacements by properly cleansing the heater and pipe jets.