Video
Prepare the Mold to Build a Biosand Filter (BSF)
Learn how to clean and oil a Biosand Filter (BSF) mold and to install the outlet hose before pouring the concrete container to achieve a smooth, trouble free concrete filter body.
Video
Prepare the Mold to Build a Biosand Filter (BSF)
Learn how to clean and oil a Biosand Filter (BSF) mold and to install the outlet hose before pouring the concrete container to achieve a smooth, trouble free concrete filter body.
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