Eheim pro 4 (model 2271) for tanks up to 250 litres

The EHEIM professionel 4+ – Eheim’s best external filter but now with an integrated ‘emergency’ button.

The new filter adopts the many advantages of the professional 3 series – powerful performance, optimal energy efficiency, quiet operation, priming aid, safety hose adapter – but we have also improved the technology by incorporating the new ‘Xtender’ button.
In the event the output is reduced due to the fine filter media blocking, the button can be adjusted to redirect the flow. The biological filtration is main-tained and the service interval can be extended by a few days.

There are 3 sizes available for aquariums up to 250, 350 and 600 litres. The models 250 and 350 are also available with an integrated heater as thermo filter (T). In addition, the professionel 350e can be electronically controlled from a PC.

Advantages of the EHEIM professionel 4+ filter

Premium class external filters with all the advantages of the professionel 3 series
For aquariums from 120 lt to 600 lt
Additional control function (Xtender) to counteract blocked filter media and extend intervals between cleaning
Square canister for high stability and large filter volume
High flow capacity with low energy consumption
Adjustable pump output.
High performance ceramic axle guarantees quiet running and durability
Integrated self priming aid to initially prime the filter
Safety hose adapter can only be removed when the valves are closed
Top prefilter effectively traps large dirt particles and allows for longer service intervals. Simple to remove and easy to clean.
Individually filter baskets with „Easy Clean“ grid
Fully equipped with original EHEIM filter media and installation accessories.

Technical data EHEIM professionel 4+ 250 (model 2271)
for fresh and marine aquarium tanks from 120 to 250 litres
max. pump output: 950 l/h (adjustable)
pump height: 1.50 m
filter volume: 3.50 l
prefilter volume: 0.50 l
canister volume: 6.10 l
power consumption: 12 watts
hose size 16/22 pressure and suction side
Dimensions (width x height x depth): 238 x 358 x 244 mm
incl. Original EHEIM installation accessories
incl. Original EHEIM filter media
the filter comes complete and ready to use

With the new professionel 4+ series, EHEIM once again sets high standards in aquarium filter technology. Many of the details and useful functions have been taken over from the previous filter model, the professionel 3. The most striking feature of the new professionel 4+ external filter is the emergency button “Xtender”. This button makes it possible to have a little more time until the next cleaning of the external filter is carried out. Always when we have the least time the water throughput is low and the filter is blocked calling for an immediate cleaning. Using the emergency button “Xtender” you will gain a few more days without any adverse effect on the biological filtration capacity.

The gradually adjustable Xtender button makes the water pass partly around the microfilter inside the filter system so that the water throughput is restored and the aquarium filter goes on working as usual.

The new EHEIM professionel 4+ 250 and its installation fittings come in fashionable anthracite colour. Apart from that, the EHEIM professionel 4+ 250 retains lots of useful details known from ist predecessor including the integrated suction aid for the filter start, the integrated stop valves, the large-volume pre-cleaner, the security hose adapter, and the Easy-Clean function. The high-class ceramic shafts and bearings ensure a very silent operation of the external filter for many years. The EHEIM professionel 4+ 250 is definitely the best external aquarium filter currently on the market. All the extensive experience of the inventor of the aquarium filter is built into this model: uncompromising quality, high-quality materials and workmanship, useful and sophisticated functions says EHEIM.