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How often should the sand be replaced?
How often should the sand be replaced?
The sand never needs to be replaced. The sand is cleaned by the swirl & dump maintenance.
Last Updated on Monday, 08 March 2010 18:40
About Us
What We Do
Where We Work
Get Involved
Resources
Publications & Materials
Household Water Treatment
Biosand Filter
Sanitation
FAQs
Biosand Filter
Biosand Filter - Version 10
Training Workshops (Calgary)
Training Workshops (International)
Youth Educator Resources
Resources for grant seekers
Videos
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