Power House - PRODUCTS - Filtering Media

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Ring-shaped filtering media with a
unique difference characterizes the
Power House style.

Power House products are shaped like the typical ring form (S Size products are in column form), but a close look shows that the surface has irregular undulations, which finely break down water flow inside the filter, carrying water throughout the filtering media.

Nitrifying bacteria such as nitrosomonas and nitrobacter are so-called aerobic bacteria which constantly need fresh water and the oxygen in it. Thus if dry areas form within the filter, the bacteria cannot be expected to function properly.

Such dry areas do not form when using Power House products in a large external filter, and thus nitrifying bacteria as well as other microbes are constantly activated.

Also, as Power House products are unlikely to clog up inside the filter, there is no strain put on the pump either.

●Amount of dissolved oxygen and the number of various microbes

The diagram below shows that when oxygen volume is low, the number of beneficial bacteria, including ammonia-oxidizing bacteria (nitrosomonas) and nitrite-oxidizing bacteria (nitrobacter), decrease drastically. To activate beneficial bacteria, a smooth supply of oxygen to filtering media is necessary, and to do so, fresh water needs to flow throughout all filtering media set inside the filter. Power House breaks down water flow so that water flows throughout the filter, providing an extremely high supply of oxygen, promoting activation of beneficial bacteria and enabling excellent nitrification.

Source: The Japanese Society of Fisheries Science-Fisheries Science Series 32 by Akira Kawai, published by Kouseisha-kouseikaku Corp. 1990

●Power House products inside the filter

Power House rings face various directions inside the filter, and the Raschig ring form's characteristic of high performance in water flow diffusion easily enables oxygen supply to beneficial bacteria.

●Water flow diffusion tested inside a filter

The degree of water flow diffusion that occurs among filtering media set inside a filter is extremely important in terms of oxygen supply to beneficial bacteria. This experiment compares conditions of water flow diffusion among filtering media set in a filter for: A. Power House (Raschig ring shape) and B. Ceramic (ball form) Power House ring's unique shape lets water flow throughout, without creating any dry areas, thus enabling oxygen to be supplied all throughout the filter. When filter media clogs, water flow decreases and promotes the emergence of anaerobic bacteria. As shown in the images below, the shape of Power House rings not only enables high water flow diffusion, but at the same time makes it unlikely to clog, providing ample oxygen supply.

●Temperature scale by color

　Power House (Raschig ring shape)

　Ceramic (ball form)

●The shape of Power House products makes them unlikely to clog

When filter media clogs, water flow decreases and promotes the emergence of anaerobic bacteria. The shape of Power House rings (upper image) not only enables high water flow diffusion, but at the same time makes it unlikely to clog, providing ample oxygen supply.

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