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For marine aquariums
3) Promptly dispose of completed test solutions by rinsing test cavity under running water
Delivers up to 640 litres per hour for effective aeration
Ribbed surface encourages beneficial bacterial growth
Operating temperature range: Works well with ambient room temperatures of 18 °C
Black Knight 4" Dia x 12" Long Filter Brushes - 12 Pack sale For marine aquariumsBlack 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,