The Aqua Nova Sponge Filter is a compact airlift filter, ideal for nano tanks, shrimp aquariums, and breeding setups. It offers effective mechanical and biological filtration, quiet, safe, and energy-free. Water is gently drawn through the fine-pore sponge using an external air pump (not included). This process traps debris and supports the growth of beneficial bacteria that break down harmful ammonia and nitrite. The result: clean, healthy water for shrimp, fry, and other delicate species. The filter is easy to install using the included suction cup and is built to last. Cleaning is quick and simple.Aqua Nova Sponge Filter+ ideal for shrimp, fry, and nano aquariums+ fine-pore sponge ensures mechanical and biological filtration+ gentle water flow - perfect for sensitive inhabitants+ operates via external air pump (not included)+ silent and electricity-free operation+ easy to clean and highly durable+ available in two sizes:+ NSF-40 L sponge dimensions: approx. 95.5cm (H), total h