Aquarium Biochemical Cotton Foam Sponge Filter Multiple Sizes & Filtration Levels

Features:

• The biochemical filter has the best effect on decomposing the excrement and forage leftovers.
• Its multi-porous sturcture will avoid blockages and provide the largest adhesion area for bacteria.
• The material has great thickness, it is durable.
• Suitable for using in freshwater and marine water.
• Can be cut any sizes as your needs.
• Lightweight & soft design.
• Excellent water permeability.
• Cultivate the nitrifying bacteria for biological filtration.
• Dense shape makes it effective to avoid residue.
• Can be used again after cleaning.

Note:

• Replace the bio-sponge every three months to ensure the filtrating effect as well as the growth of the nitrifying bacteria is kept in check.
• There may be an error of 0~2cm in manual cutting of the material.
• The biochemical cotton will be vacuum packed and compressed when it is packaged and shipped. If you find that the biochemical cotton is small, deformed or not thick enough after receiving the goods, leave it out for 1-2 days, the biochemical cotton will be restored to the original state, vacuum compression will not have any effect on the filtration performance!