“Everybody but me uses an inverted pop bottle,” says Lee Harper about his brine hatching setup. “I use right side up 2 liter plastic bottles with the top cut off” just above where the neck flares out. Don’t throw the top away–this cut off piece makes a useful funnel.
“If the [brine shrimp] eggs are good and the aeration is adequate, the rounded bottom is just as effective as the cone shape.” The advantage is that no hanger or rack is required to hold the hatching bottles. Lee sets them inside a styrofoam box with a 15 watt light bulb above them for light and warmth, then siphons out the shrimp from the lower middle area after they have settled.
— G.C.K.A. Newsletter, September 1999