Step 1: Materials required
2.PVC pipe of 1 dia
3.PVC pipe of .5 dia
3.a power head of displacement capacity -300lph
4.filter media.- bio balls,sponge
5.glue of some kind.etc
Step 2: Preparing the box
make some holes to the lid of the box for air circulation
Step 3: Preparing outlet pipe and sump divider
the divider is cut so that it fits tightly inside the sump,the divider can be of any material here i hav used foam board.
Step 4: Assembling
glue the stuff.