The U series underwater filters have a three stage filtration which is ideal for use in fresh, marine or reptile environments. A simple media upgrade is the polyester pad, though with some models it appears to be more about selling the pads as a disposable and hence replacable item more than it actually appears to benefit.

In our collection you will find Fluval U2, U3 and Fluval U4 internal filter models, along with Fluval U Mini and Fluval U1 models, which are ideal choices for smaller tanks. The Fluval U2 is can be used in aquariums between 45 and 110 litres, with a flow rate of 400 litres per hour. uk/digital-card which will be delivered to your recipient's inbox directly if you are concerned about postal delays this Christmas. Fluval U Series Underwater Filters provide complete and efficient 3-stage filtration, including BIOMAX biological filtering (U2, U3 and U4 models), to create superior aquarium water quality.The Fluval U2 Underwater Filter provides complete and efficient 3-stage filtration, including BioMax biological filtering, to create superior aquarium water quality. Universal Aquatics Ltd] is an Introducer Appointed Representative of Pay4Later Limited, trading as Deko, which is authorised and regulated by the Financial Conduct Authority (FRN 728646). For example if a large amount of ammonium is present, many bacteria can survive and reproduce using it as their food source, but If there is hardly any ammonium, only a portion of the bacteria will survive.

Fluval underwater filters with three stage filtration are ideal for use in fresh, marine or reptile environments. Great design with separate filters on each side, so you don't loose balance in the tank during cleaning. The Adjustable 3-Way Flow Control feature (available in the Fluval U2, U3 and U4 models) lets you position the water flow output to meet your specific needs.The whole filter hinges forward for complete removal from the aquarium, leaving the fixing bracket in situ. Other lenders may also file information about accounts you hold with them for instance this could include your payment history and outstanding balance on these accounts.