DIY Brine Shrimp Hatchery

How to do it:

Cut the bottom off of the soda bottle.
With the 3/16" drill, drill 4 holes, equally spaced around the bottle, 1" down (if the bottle is inverted) for the hanging strings.
Drill a 3/16" hole in the center of the bottle cap.
Insert the 2'' piece of 3/16" rigid tubing into the cap, so that it will be sticking into the bottle about 1". Silicone the rigid tubing in place.
Cut 2 equal length pieces of string (about 12" should be about right).
Tie one end of each piece of string through one hole and tie the other end to an "S" hook.
Insert one end of the 3/16" hose over the rigid tubing in the bottle cap and screw the cap on the bottle.
Insert the other end of the tubing over the air pump fitting.
Loop the strings over your horizontal hatchery hanger and insert the "S" hooks through a hole in the bottle on the other side, making sure that the air pump is above it.
Fill with saltwater to the waterline (see graphic, above).

You are now ready to start Hatching Brine Shrimp Eggs.