Hose Pre-Filter

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Make every fill smarter — protect your system, extend your filter life, and optimize water quality. Product Description:When filling your cold-plunge unit, the GF36N-1P hose pre-fi lter installs in line with your garden hose and acts as the first line of defense against common contaminants. It uses a combination of premium coconut-shell activated carbon and Kinetic Degradation Flux (KDF) media to reduce chlorine, sediments, metals and odors right at the source. Key benefits: Extended filter life. By capturing sediments, free metals and chlorine before the water enters your circulation system, this pre-filter reduces the load on your unit's filter, helping prolong service intervals and reducing maintenance. Improved water quality from the start. The pre-filter’s advanced media treats up to 8,000 gallons of water, delivering softened input and cleaner water for your plunge. Ideal for salt-based water softening systems or known hard/soft water environments. If you are using a water softener, have very hard tap water, or fill with softened water (which can carry additional minerals), this pre-filter helps intercept those minerals and metals before they reach your system’s filter. This reduces stress on your equipment. Simple, tool-free installation. Fits any standard ¾″ garden-hose thread, flush for 30 seconds and you’re ready to fill. Versatile use. While perfect for cold-plunge tanks and spas, it also works for pools, hot tubs, ponds or any hose-fed fill. Why it matters for cold-plunge systems:Maintaining water clarity and circulation efficiency is critical to the operation of your cold plunge. Feed water with residual chlorine, heavy minerals or sediment forces your main filter to work harder, reducing its service life and increasing downtime for maintenance. The GF36N-1P helps protect your system by pre-treating the feed water, leading to fewer filter change-outs, reduced chemical shock loads and longer intervals between service events. Usage recommendation:Attach the pre-filter to your hose prior to filling your plunge tank. Flush for approx. 30 seconds to purge initial dust, then proceed to fill. Replace the pre-filter when it has processed ~8,000 gallons or shows signs of reduced flow. For systems using salt-based softeners or ultra-hard input water, consider replacing more frequently to maintain optimal performance. Technical/compatibility notes: Fits standard ¾″ garden hose inlet. Media rated for up to ~8,000 gallons of service (actual lifespan depends on water quality). Lead-free and BPA-free construction. Show more