Important Information!

Due to maintenance operations, this part of the sera web site is not available from
September 22nd - 23rd.

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The new sera Online Lab ...

our free service for your aquarium

You can evaluate the water values of your aquariums in the sera Online Lab. Thus you are always informed about the water quality. The sera Online Lab will give you valueable clues on how to improve them if there should be something wrong with the water values.


Quick test

  • easy and fast
  • no login required
  • analysis of water values
  • view and print results




  • also free of charge
  • analysis of water values
  • water values can be saved for your aquariums
  • view and print results
  • diagrams of the development of water values


sera guide booklets

Browse our extensive guide booklets. From the first steps via correct feeding up to health related topics ...

sera guide booklets