We are making the half-gallon production jar available as a single item purchase.

This purchase includes the jar, plus our own uniquely-designed Silva-Cap that will accept (4) 14g rods, with an inlet for the air pump agitator, and an outlet for air to escape.

This will work great if you already have silver rods, power supplies and an air blower. Or if you've broken your old half-gallon jar, you can now purchase a new setup.