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pH and Alkalinity (KH)
Helps boost biological filtration efficiency
Diverse Compatibility: Suits a range of marine species including corals and macroalgae
Contains beta glucans to enhance immune response
NO3:PO4-X allows for precise control of nutrient levels
Black Knight 8" Dia x 10" Long Filter Brushes - 12 Pack 10-20 pH and Alkalinity (KH)What 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
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