How to make a Biosand water filter step two

Step two

Sand and Gravel separation and Purification .

 

Gravel for first layer of bio sand water filter.It is washed several times with clean water.                                                                

Gravel for first layer of bio sand water filter is poured in clay pot .

Gravel for second layer of bio sand water filter. It is washed several times with clean water.

Gravel for second layer of bio sand water filter is poured in clay pot .

Gravel for third layer of bio sand water filter It is washed several times with clean water.

Gravel for third layer of bio sand water filter is poured in clay pot .

Gravel for fourth layer of bio sand water filter. It is washed several times with clean water.

Gravel for fourth layer of bio sand water filter is poured in clay pot 

Fine sand for fifth and last layer of bio sand water filter It is washed several times with clean water.

Fine sand  for fifth and last layer of bio sand water filter is poured in clay pot .