Aquarium Accessories Biochemical Cotton Filter Practical Fish Tank Pond Foam Sponge Filter Black Multiple Size 15 25 35 50PPI

Good luck with your favorite purchasesHigh-concerned chemical : None Origin : Mainland China Type : fish Functions : Culture nitrifying bacteria and maintain water quality Functions 1 : Cultivate the nitrifying bacteria for biological filtration. Functions 2 : Break down manure and leftover forage Functions 3 : Material is thick and durable Functions 4 : Suitable for use in fresh water and seawater Functions 5 : Can cut any size as needed Functions 6 : Excellent water permeability Functions 7 : It can be reused after cleaning