Here is how I do mine,with a few modifications
Now,what I do different:
I drill a small hole thru the bottle and bottle cap(the one inside the base),put a rigid air tube thru it(the kind that come with UG filters).
Drill a small hole thru the base,connect some airline tubing to the rigid line,then put the airline tubing thru the hole in the base,connect a 1 way gang valve to the end of the air line tubing sticking out of the base.
You may want to seal the cap holes with silicone(I do).
Finally,I tabe the bottle used for the salt water the whole way around it,leaving a few inches at the bottom untaped,the Brine Shrimp will be attracted to the light at the bottom(by the cap).
When you are ready to harvest,open the gang valve and drain as many as you want into a net or container of your choice.
All Shrimp and no eggs or residue!!!