Atlantic FilterFalls biomechanical filters remove suspended solids, convert toxic ammonia and nitrites to harmless nitrates and aerate the pond. Atlantic's FilterFalls are designed to be able to expand filter capacity as ponds age and fish grow. Efficient removal of toxins and floating particles from the water column improves water quality and clarity. The oversized chamber contains more media material to start with, it upgrades with additional filtration when needed and offers more choices of optional filtration media. The overhanging weir with a drip edge, eliminates leaking due to silicone seal failure. Multiple bulkhead locations allow maximum versatility in plumbing the FilterFalls. Its reinforced body prevents warping and deformation for years of worry-free service. The support bars accommodate heavier stone and gravel for ease in camouflaging. Atlantic’s FilterFalls includes an installation kit, male thread adapter and a one-piece liner flange. The BF1600 features a sturdy top grate and support bar that allows natural rock camouflage. The Media Bag for Bio-Tech Media, Bio-Balls and Bio-Rocks provide maximum surface area for beneficial bacteria. The Dual Bio-Tech filter mats support both mechanical and biological filtration. A sturdy bottom grate supports the filter media. A rolled upper rim provides clean lines with great strength. It has a one-piece liner attachment flange and a heavy-duty 1.5” FIPT bulkhead. The BF1600 has a waterfall width of 16”, a pump flow range of 1,000-3,900 GPH and a pond volume of up to 1,250 gallons. It matches to the PS3900 and has a lifetime (enclosure) warranty.