Black Knight 4" Dia x 12" Long Filter Brushes - 12 Pack jbl including iodate (the predominant form

including iodate (the predominant form in seawater)

as this will remove the most important element of your filtration system

Perfect for most applications (except Undergravel filters)

Utilising the Eheim Air Pump 400 provides significant benefits by facilitating consistent aeration and water movement

Black Knight 4" Dia x 12" Long Filter Brushes - 12 Pack jbl including iodate (the predominant formBlack Knight filter brushes are crafted from top quality Hydrotek polypropylene, twisted into two stainless steel wires, forming a cylindrical brush with a loop at one end for easy hanging. The other end is capped with a plastic knob for safety. These brushes are designed to last indefinitely, offering the easiest, most efficient, and cost effective pond filter medium available. Ideal for filtration systems in fish farms, hatcheries, public aquaria,