Homemade water filter | How to make home made filter

Cut off the bottom of an old plastic soda or juice bottle using scissors or a knife.
Place the bottle upside down into the vase or tall drinking glass.
Place cotton balls, cloth, or a coffee filter inside the bottle 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 about two inches of gravel or small stones as the third layer.
Add about three to four inches of clean sand on top of the gravel.
Add gravel to the bottle as the final layer. Leave about a half inch of space from the top of the upside down bottle.

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