Fluval U2 Internal Filter (110L, 400L/h) Artificial Plants leaving an aquarium full of

leaving an aquarium full of toxic ammonia

Flow rate is not adjustable

Regular Strength: Add 5ml per 37L

produced from the only the best raw materials

In artificial environments such as aquariums the proper bacteria are not usually present to ensure adequate biological activity all of the time

Fluval U2 Internal Filter (110L, 400L/h) Artificial Plants leaving an aquarium full ofProvides complete and efficient 3 stage filtration, including BioMax biological filtering, to create superior aquarium water quality For fresh, marine and reptile environments Adjustable 3 way flow control feature lets you position the water flow output to meet your specific needs Top utput setting provides maximum circulation and oxygenation Integrated Spray Bar setting provides a gentle, even flow for planted aquariums Bottom output setting is for