Volker's Aquarium Supplies
Winnipeg, MB Canada
PH: (204) 668-8719
email: info@volkersaquarium.com


  The Hamburg Mat filter foam is now available.  
The foam comes in coarse to fine grade. It is available in sizes  39” x 19” , 19” x 19”, and in 2” thickness.

Also available custom cut by request.

To learn more about the Hamburg Mat filter, it’s benefits,  and it’s origin
see below, also available, the blue foam punch filter.
The Hamburg Mat Filter
The Hamburg Mat Filter, HMF for short, has been in use in the Hamburg area of Germany since the early 1960’s.
  The Hamburg Mat Filter uses a single section of filter foam as the biological filter medium. In the first designs, these sections were installed on either side of the aquarium, side to side, bottom to top
  The filter foam used is reticulated foam specifically made for filtration purposes and without any chemical additives. The density of foam used is usually 10, 20 or 30 PPI (Pores per inch).
  Filter Foam is available at Volker's Aquarium Supplies

The thickness of material is usually 3 or 5 centimeters thick.

These choices are influenced by the tank size and type of inhabitants. Fine foam is better suited for shrimp and fry rearing tanks, Course material (10 PPI) is more suitable for large fish. The thickness is dependant on the size of the tank as the thinner foam will not be stable in a larger section.

Traditionally the foam is installed into a plastic channel which has been siliconed to the tank sides and bottom. I personally have found it to be expectable to friction fit the foam into the tank end side to side, the foam remains in solid contact with the bottom by pushing the top below the plastic trim of the tank.

Many other configurations are possible, corner, semicircle and even hang on the back versions.

The required size of the filter mat can be determined using the following equation

V x T x A = Filter area
V= volume in litres
T= volume turn over per hour (2 is recommended)
A= approach speed in centimeters per minute (5-10 is recommended, I use 7.5)

You will find that the Mat Filter area will be correct for most standard size tank sides.

The calculation is necessary for other shapes and locations.

You may say that this is just another sponge filter, well, you are right and wrong!

The Hamburg Mat Filter has a very large filter area, far larger than any standard sponge filter, this allows for optimum dwell time of water in the filter medium to maximize the biological filtration activity. In addition to this a build up of beneficial bacteria will occur behind the Mat! Do not remove this bacterial build up.

Many hobbyists, including myself have found that once a Mat Filter is installed, cleaning is not required for very long periods of time (2-3 years or more).

Moving the water thru the mat can be achieved in one of 2 ways, the installation of a power head or an air lifter.

Call for information (204) 668-8719 or come by and check us out in person