Bio Sponge Filter xy-2831

This filter sponge is used for water filtration in aquariums, measuring 2 inches in diameter by 3.5 inches in height and comes in pairs. It supports beneficial bacteria and can be adjusted in length. It attaches to glass with suction cups and works with an air pump.

• The description claims the sponge has efficient filtration for suspended solids.
• The description claims the sponge supports the life of beneficial bacteria.
• The description claims the sponge is recommended for tanks between 35 to 50 gallons.