RS Electrical Filter Sponge - Top Filter Sponge - Molded Aquarium Sponge - 32 × 12 × 2 cm - (2 in 1 Pack) Growth Supplement Contains Ceramic Ring to store

Contains Ceramic Ring to store beneficial bacteria and reduce water hardness

Optimally balanced nutrients

Double Seal Material

Most importantly

RS Electrical Filter Sponge - Top Filter Sponge - Molded Aquarium Sponge - 32 × 12 × 2 cm - (2 in 1 Pack) Growth Supplement Contains Ceramic Ring to storeIdeal for all brand Top filters, this sponge is versatile in use. This product can be used for sea water fish tank, fresh water fish tank, planted aquariums with sizes being cut as per your wish. The pore gap and flexibility of this material sponge is the most suitable breeding ground for cultivating the fine nitrobacteria. This biochemical sponge has the best effect on decomposing the excrement and the food leftovers, and improve filtration and