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The bead-shaped formations of both components ensure optimal water flow
providing an optimal space for fish and plants to thrive
these nets are designed for longevity
- Test Plate
promoting stress-free living conditions for aquatic life
Black Knight 4" Dia x 16" Long Filter Brushes - 25 Pack bask The bead-shaped formations of bothWhat are Black Knight Filter Brushes: Black Knight filter brushes are made from the very highest quality Hydrotek polypropylene twisted into two stainless steel wires to form a cylindrical brush with a loop at one end for hanging. The other end is capped with a plastic knob for safety. They last indefinitely and are the easiest to use, most efficient and most cost effective pond filter medium you can buy. Our brushes are used in filtration systems in