Take 2 tbsp seeds, or enough to cover bottom of jar, and soak in water overnight.
Drain and rinse the next day (sometimes I rinse twice a day just because). Replace the snap lid with some kind of mesh. Apparently you can buy cute mesh rings in health food stores but I haven't seen them. Instead I used a jelly strainer and it works just fine. Keep out of direct sun as some of the seeds may dry out.