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Operating temperature range: Works well with ambient room temperatures of 18 °C
Placement: JUWEL Filter System
Ribbed surface encourages beneficial bacterial growth
Provides protection for fish and invertebrates against bacterial infections
Black Knight 4" Dia x 12" Long Filter Brushes - 12 Pack sale Operating temperature range: Works wellBlack 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,