CONSTRUCTION | h2oflow

Step-by-Step Filtration Construction

Step 1

Step 2

Step 3

Fill charcoal up to first line.

Step 4

Fill sand up to second line.

Step 5

Fill layer of gravel up to third line.

Step 6

Fill another layer of sand up to fourth line.

Step 7

Fill another layer of gravel up to fifth line.

Step 8

Place complete filter in sturdy cup.

Obtain clean 2 L bottle. Mark five lines one knuckle apart starting from the curvature of the bottle.

Rubber band the 3 coffee filters around the tip of the bottle.