BIOLOGICAL WATERFALLS Available in 2 sizes: F1000 to accommodate ponds up to 3000 Gallons F5000 to accommodate ponds over 3000 Gallons WaterMark biological waterfall filters are created to mimic a natural waterfall or spring while helping you maintain a balanced ecosystem. Easy to install, our waterfalls are constructed with 14?€? and 23?€? waterfall widths and will retrofit into any existing water garden. Biological filtration promotes the growth of beneficial bacteria for a naturally balanced pond and healthy water quality. With WaterMarks new biological waterfall filtration units, you can create the beauty of moving water through the sights and sounds of a waterfall or stream source. This is not only pleasing to the senses but adds oxygen to the water rand promotes a healthy, balanced ecosystem. Our waterfalls are designed with the latest technology, decreasing maintenance time and providing instant, tool-less access. The intake to the filtration unit is located on the bottom of the system, allowing water to ?€?up-flow?€? through the BioVort™ vortex separator plate. Our BioVort technology creates a centrifugal whirlpool force to separate and settle solid debris for less maintenance. Water then passes through the Matala?® filter pads and filtration media capturing micro-organisms for the ultimate in pure pond water filtration. While the system is an efficient biological filter, it also creates a natural-flowing waterfall. Use two or more to create a beautiful array of waterfalls. The water weir was designed to allow water to naturally ?€?fall?€? from the system. All plumbing is hidden and plant baskets can be placed on top of the biological media to create an additional filtration and natural disguise.