Jun 18, 2013 #1 matthew_raw Aquarium Advice Activist Joined Jun 16, 2013 Messages 187 Built from a liter bottle cut 3/4 of the way down filled with gravel, floss and sponge with a 1/2 inch pvc pipe to vent the air and drive the water up
Built from a liter bottle cut 3/4 of the way down filled with gravel, floss and sponge with a 1/2 inch pvc pipe to vent the air and drive the water up