TMC Bio Rings
• 1" (210m2/m3) and 1 1/2" (130m2/m3) Bio-Rings have excellent flow through characteristics, making them ideal for trickle filter applications.
• Designed to give a large, accessible surface area which is easily contacted by the water (usually falling downwards) and gas, whilst avoiding clogging.
• Made from blue polypropylene.
• Positively buoyant.
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