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Creating a water filter - Coggle Diagram
Creating a water filter
- Cut a clean bottle into half. Use the part which has the bottle cap.
- Place a cotton ball, cloth or a coffee filter as the first layer.
- The first layer should be about one to two inches thick
- Add an inch of activated charcoal as the second layer on top of the cotton layer.
- Over the charcoal add an inch or two layer of sand
- Over the sand add about two inches of gravel or small stones as the fourth layer.