Eheim Professionel 4+ Thermo External Filter

4 reviews

The Eheim Professionel 4+ Thermo range of filters even features temperature control, making it perfect for tropical tanks. Available at the best price from Swell UK.


  • Professional 4+ 250T (Inc Media)
    code: 2371510 In Stock (Only 1 left!)
  • Professional 4+ 350T (Inc Media)
    code: 2373510 Out of stock

Product Information

Eheim have adopted 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. In addition, the professionel 350e can be electronically controlled from a PC.

Advantages of the EHEIM professionel 4+T filter

  • Premium class external filters with all the advantages of the professionel 3 series
  • For aquariums from 120 lt to 600 lt
  • Integrated heating element so no internal heater required.
  • 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.

Eheim Pro 4+ 250T

  • Aquariums up to 250ltr
  • Heating element: 200w
  • Pump: 950lph
  • Pumping head: 1.5m
  • Dims: 238mm x 244mm x 398mm

Eheim Pro 4+ 350T

  • Aquariums up to 350ltr
  • Heating element: 200w
  • Pump: 1050lph
  • Pumping head: 1.8m
  • Dims: 238mm x 244mm x 453mm

Latest Customer Reviews

  • Rating
    Date 13/08/2021 18:08pm
    Eheim Professional 4+ 250T (Inc Media)
    Feefo Logo
    This is the second Eheim 250T I have purchased. These are expensive compared to the non thermo filters but they hold the set temperature and are convenient.
  • Rating
    Date 23/11/2020 15:11pm
    Eheim Professional 4+ 250T (Inc Media)
    Feefo Logo
    I already had an aqua one 250 filter for my 230 litre tank but iv had nothing but probs I only had that filter as it came with the tank.. I should have known better !! Previously iv always used Eheim in my tanks as they areare the best filters in the word within 20 mins of the filter being fitted u could see the difference 6 days later my tank is looking pretty good and water test are already 50% better than they ever had been in this tank. Thanks eheim u saved my fishes 🥇🏆
  • Rating
    Date 10/08/2020 22:08pm
    Eheim Professional 4+ 250T (Inc Media)
    Feefo Logo
    Works as expected satisfied with order
  • Rating
    Date 09/04/2020 12:04pm
    Eheim Professional 4+ 350T (Inc Media)
    Feefo Logo
    Great replacement product
  • Rating
    Date 01/05/2019 02:05am
    Eheim Professional 4+ 250T (Inc Media)
    Feefo Logo
    Great filter, plenty of media space, primer works well, runs very quietly and with the added bonus of a built in heater.