Replacement for Nature2 W20750 Spa Mineral Sticks Hot Tub in-Filter Cartridge Last for 4 Months Universal for Hot Tub Spa Swimming Pool All Spas Flow Rates Up to 1000 Gallons (Yellow 2-Pack)

Great Compatibility — Compatible with all spas flow rates, ozonators and all your existing filtration systems both suction-side and pressure-side filters. Treats for all sizes spas & hot tubs up to 1000 gallons (4000 liters). Compatible with Jacuzzi, inflatable spas, alcove bathtub, walk-in bathtub, whirlpool bathtub, swim spa, swimming pool, hot tub boat, hot spring pool, most standard bathtub, etc.

• Great Compatibility — Compatible with all spas flow rates, ozonators and all your existing filtration systems both suction-side and pressure-side filters. Treats for all sizes spas & hot tubs up to 1000 gallons (4000 liters). Compatible with Jacuzzi, inflatable spas, alcove bathtub, walk-in bathtub, whirlpool bathtub, swim spa, swimming pool, hot tub boat, hot spring pool, most standard bathtub, etc.
• Wide Application — The minimum required filter length is about 6.5 inches, and the minimum filter hole diameter is 1-1/4 inches. Professionally manufactured and tested to meet or exceed OEM specifications to be a reliable replacement for Zodiac Nature2 W20750, W20660, 20660, W20675, 15420, FOU-45-4000, W20750EACH, ZODW20750.
• Advanced Controlled Release Technology — This nature-friendly, high-efficiency, reliable and low maintenance technology produces wonderfully cleaner, clearer, healthier and softer spa water that is purer, fresher, gently soothing and no chemicals. Save your money and time, improve the water quality and spa experience for you, your family and your friends.
• Natural Spa Experience — Reduces the need to frequently add heavy chemicals. Reduces the need of chlorine and harsh chemicals between 50% and 80%. Reduces potential for unpleasant odors and eye or skin irritation. Easy water balancing and maintaining, will not affected by heat, swimmers or heavy bather loads and will not damage your spa equipment. No more green or dirty spa water!
• Perfect Design — Simply drops into the core of most spa filters in seconds for easy installation & hassle-free maintenance. Cartridge replacement every 4 months is recommended for optimal performance. Comes with support stems, instruction and schedule. These stems keep the main body in the middle of the filter to avoid sitting on bottom of filter which can block the return pipe.
• Superior Quality — Advanced proven natural mineral ingredients with silver ions, with premium grade CNC machined reinforced thermoplastic PVC housing, strength and durability, anti-impact and anti-deformation, anti-corrosion and aging resistance, never peel, fade or leak, high and low temperature resistance, all-weather performance and long-lasting reliability.
• 100% Satisfaction Guarantee — If you're not 100% satisfied with our items, simply return it for refund within 30 days. Support 12-month Warranty. Professional & Sincere Service allows you to take no risks to purchase in E-cowlboy!