Serenity Small Sponge Filter A fantastic low cost, low flow sponge filter option for low stocked tanks. Fantastic for shrimp tanks!! Nano SMXY-2835 Ideal for tanks up to 40L Biological Filtration Air Driven Sponge size 5.5cm X 4.5cm Suitable for Aquariums up to 40 litres Small SMXY-180 Biological Filtration Air Driven Sponge size 8cm X 6.5cm Suitable for Aquariums up to 100 litres Medium SMXY-280 Biological Filtration Air Driven Sponge size 6cm X 12cm Suitable for Aquariums up to 150 litres Sponge filters are great because they're quiet, oxygenate the water, and filter the water, all whilst maintaining a colony of good bacteria to help keep your tank healthy. Uses air via an uplift system to draw water through the sponge. Simply connect to an air pump (not included).
