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Its titanium components extend the life of the system
Beneficial bacteria such as Nitrospira
chloramine and heavy metals which are harmful to fish and require neutralisation for fish use
but the core functionality remains the same
Black Knight 6" Dia x 12" Long Filter Brushes - 12 Pack Monthly_Promo Its titanium components extend theWhat 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