Blue Thumb Serenity Waterfall Filter w/ bio-twist media

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The Blue Thumb Serenity Waterfall Filter (PB1151, formerly part of the Serenity Falls line) is the entry-level DIY pond waterfall box, sized for new or existing ponds and water gar dens up to 1,200 gallons. It biologically filters and aerates the pond water — beneficial bacteria colonize the included Bacti-Twist media for biological filtration, while a Matala filter mat handles mechanical polishing of debris. The filter ships complete with a detachable weir, biological filter mat, Bacti-Twist media with net, 1.5" plumbing fittings, and installation instructions. Made in the USA and backed by a 5-year manufacturer warranty. Key Features Combined biological + mechanical filtration in one waterfall box Detachable weir for easy access and cleaning 14" wide spillway delivers a smooth waterfall sheet Includes Bacti-Twist bio-media — large surface area for nitrifying bacteria colonies 1.5" plumbing fittings for direct PVC connection Made in the USA 5-year manufacturer warranty What's Included Serenity waterfall filter box Detachable weir / spillway lip Biological Matala filter mat Bacti-Twist biological media with media net 1.5" plumbing fittings Installation instructions Specifications Model DIY Pond Waterfall 1200 (Serenity) SKU / MPN PB1151 UPC 897570001151 Spillway Width 14" Overall Dimensions 19" L × 15.5" W × 14.5" H Maximum Pump Flow 1,800 GPH Maximum Pond Size Up to 1,200 gallons Plumbing Inlet 1.5" Filtration Type Biological (Bacti-Twist) + Mechanical (Matala mat) Origin Made in the USA Warranty 5 years (manufacturer) Documentation 📄 DIY Serenity Skimmer & Waterfall — Installation Manual (PDF) 📄 Serenity Skimmer — Installation Instructions (PDF) 📄 Blue Thumb Pond Planning Guide (PDF) 📄 Pond Maintenance Schedule (PDF) 📄 Blue Thumb Spring Product Flyer (PDF) 📄 Blue Thumb Fall Product Flyer (PDF) Product Video Show more