I use an upside down coke bottle sitting in its base. Put some lead from anchoring plants around the end of the air tube to keep it right at the bottom. I use and $8 desk lamp with a 60 watt bulb as a heat source and light... Seems to work pretty well..

Reason behind the inverted bottle is the conical shape means that you dont get "dead-spots".

Light isn't neccessary, but! put a light to the side/bottom/wherever you want em, and the Artemia will follow it, leaving the rest of teh bottle unpopulated, and egg-casing removal a sinch...

Easiest way that I found, cut holes slightly smaller than diameter of the bottle in some core-flute (real-estate signs), fold to a box shape, give yourself room underneath to play around with, also means that you can drip-feed through your air-line when you are not using it for air...

You could have drilled a couple of holes in the lid for the airline and one to vent, then you can screw the lid down properly...

That was a plastic water bottle that had been chopped. The lid was only to keep the salt residue from messing up the glass. :slfg: