Video
Wash Separation and Drainage Gravel for the Biosand Filter (BSF)
Part of a video series on how to build a biosand filter (BSF). Find out how to correctly wash the separation and drainage gravel layers used when installing a BSF.
Video
Wash Separation and Drainage Gravel for the Biosand Filter (BSF)
Part of a video series on how to build a biosand filter (BSF). Find out how to correctly wash the separation and drainage gravel layers used when installing a BSF.
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