Question

Which is better in terms of filtration - cotton or sponge. Why?

Answer 1

Answer:

Sponge filters are precisely what the name implies, a sponge through which the aquarium water is drawn. This provides mechanical filtration, and once the sponge has matured and grown bacterial colonies, it provides biological filtration as well. Sponges come in a variety of shapes and sizes, as well as pore sizes.

Mechanical filtration is just the fabric physically catching the particles – the team found that with fabrics such as cotton, high thread count works the best. The smaller the holes, the fewer large particles can escape.

Hence, Cotton is better for any condition.