Filter rings - Ceramic noodles for aquarium and garden pond filters, 12 mm, 1 L

HIGH-QUALITY CONSTRUCTION: This sintered quartz bio-ring filter media is manufactured using a high-temperature sintering process with inert quartz and is ideal for optimal biological filtration in both freshwater and saltwater aquariums. PH NEUTRAL: Simplify your water filtration with this sintered quartz bio-ring filter media that leaves the pH unchanged and promotes the growth of beneficial bacteria colonies. SAFE FILTER MEDIA: This sintered quartz bio-ring filter media does not release heavy metals, phosphates, or substances that can be harmful to marine life. HIGH WATER FLOW RATE: Ensure your aquatic world is immersed in crystal-clear water with this filter media that delivers a high water flow rate and superior biological balance.