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Tetra EasyCrystal Filter 250


Tetra EasyCrystal filters are advanced, easy to use and maintain, power filtration units, for use in tropical, and coldwater aquariums. They feature mechanical, biological, and chemical filter media, to ensure crystal clear, healthy water. There are 3 Tetra EasyCrystal filters available, suitable for 40, 60, and 150 litre aquariums.

The EasyCrystal 250 model features:

  • Mechanical filtration with double layer filter floss pads that efficiently remove the tiniest particles (white side = coarse pre-filter, green side = fine filter).
  • Biological filtration with filter foam and Bio Filter Balls that have an extra large surface area for colonising beneficial bacteria.
  • Chemical filtration using special activated carbon to eliminate water clouding and unpleasant odours.
  • ‘One-touch’ easy filter cartridge removal.
  • High output pump.
  • Elegant compact design requires less space and easier to disguise.
  • Easy to install, using strong suction cups.
  • Very quiet, and energy efficient.
  • Suitable for use in tropical, and coldwater aquariums plus Turtle and Terrapin environments.

It is advisable that you clean the biological filter in old aquarium water during maintenance. Do NOT clean the filter in tap water as chlorine and chloramines will remove the beneficial nitrifying bacteria that have colonised during the maturation of the aquarium.

This filter comes with a 2-year manufacturers guarantee.


  • When replacing a Tetra Easy Crystal Filter cartridge, we recommended the use of Tetra Filter Active to make sure that lost filter bacteria is quickly restored.
  • The filter cartridge must be placed into the filter with the green side facing towards the front of the unit.


  • Output (litres per hour): 250 l/h.
  • Suitable for aquariums: 15-40 litres.
  • Running power: 3.5w.
  • Voltage: 230v / 50Hz.
  • TÜV/GS tested.
  • Manufacturer’s guarantee: 2 years.

Replacement filter cartridges available:

  • EasyCrystal Cartridge Pack (250/300) with carbon
  • EasyCrystal Cartridge Pack (250/300) no carbon
  • EasyCrystal BioFoam Cartridge (250/300)

Out of stock