Description
【Provide Health environments】:filtering medium provide an anaerobic environment, reducing the content of nitrates in water,Stabilize PH,clarify your water naturally. 【Application】:Suitable for all kinds of aquarium filter and fish tank sump,pond filter Canister such as Hang on back filter,top filter and aquarium bottom filter etc. 【Mix bio materials】:Included Quartz rings, volcanic rocks, medical-stone, coral sand, Ceramic -rings, infrared -rings, bio-beads, bio-ball, infrared microspheres, cera
