I have used small cat litter trays and huge dog pen trays, anything works. Water depth is 2 to 4 cm and doesnt require any air at all as long as you dont hatch too many. If you want larger hatches, find larger trays. The "cover" I used was generally a lump of cardboard from an old box. As long as its flat and stops the light at the sides, it will work. Its a very simple way to get shrimps without the shells, I dont know if things have changed now, but it used to be impossible to get unshelled eggs that wasnt salt lake. San Fransisco eggs never came like that when I did it before, and besides, unshelled are expensive.
and yes, small world, lol.
oops I didnt lable the cover, but you can see what I mean.
Edited by terry_G, 20 February 2012 - 05:34 PM.