PRESSURE FILTER 1500 PRESSURE FILTER 1500 $149.25 SKU: TET26549 QTY: Click here to save 5% off of your order! 1500 PRESSURE FILTER Maximum pond size 1500 gallons.  Maximum flow rate 750 gph. O verall height-16.5. The TetraPond® ClearChoice™ Pressure Filters force water through sponges and then through bio-rings to help maintain clear and healthy pond water. Its biological filtration converts harmful ammonia into relatively harmless nitrates. It is designed with an easy, one-step back-flush valve for cleaning sponges and bio-media. You can also bury to conceal and don’t have to worry about a leak due to its robust latches and O-ring seal.  If you later decide you want to add a UV clarifier to your pressure filter TetraPond® also provides UV upgrade kits.