PF-1 BIOFILTER PF-1 BIOFILTER $55.25 SKU: TET16783 QTY: Click here to save 5% off of your order! PF-1 BIOFILTER Trickle filtration and Bio-Ring media create an optimum environment for natural ammonia-digesting bacteria. Fine and coarse mechanical filtration material remove debris. Activated carbon pad removes odors and improves water clarity. Venturi, overflow, and internal spry systems enhance and protect bioactivity. Modular construction allows connection of additional filters in parallel to accommodate ponds up to 1200 gallons.  Fittings are 3/4, 1, and 1-1/4 to accomodate any pump or UV clarifier via hose or tubing