Stock photo of plastic garden pond filter / koi carp, clover shape filter / filtration

Stock Images / Photos of Pond Filters (Fish)

Stock image of plastic garden pond filter / koi carp, clover shape filter / filtration

Royalty Free Images - Filename: koi_pond_filter_1a.jpg

The filter consists of four chambers, allowing both mechanical and biological filtration to take place, recreating the nitrogen cycle in miniature. The chambers include a vortex (to allow pond waste to settle), sponges and brushes, flocor tubes / pipes, gravel media and Japanese blue filter matting.

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