What's the most effective water filtration method in the family?
When the filter is ready, use the shelf to fix the water. The turbid water is dripping down slowly, and the clean colorless water is coming out.
upside down, with a stone upon the bottle, covered with 1 cm thick cotton (clean cloth line), then the sand according to the sequence of coarse to fine Pu 5-10 cm, finally covered with a layer of cotton.
Can choose bigger cola bottles or juice beverage bottle as a container, remove the bottom
