Rüdiger Rautenberg on a cheap filtration method deserving of greater exposure…

A planted aquarium set up with a Hamburger Matten Filter. © Rüdiger Rautenberg

The HMF (Hamburger Matten Filter) is apparently not all that well known outside mainland Europe, or so I’ve been told. I cannot speak for the whole of Europe but in Germany it is certainly a widespread and well-loved method of filtering fish tanks and is favored especially by breeders and hobbyists who maintain a larger number of tanks in a dedicated fish room. Continue reading »