# Re: [Killietalk] hatching brine shrimp

```If air is pumped into the hatcher the surface area is not as you state as there is a change in surface area as the air changes the water at the surface.

Mike

Curtis Smith <cskillies at hotmail_com> wrote:
Occasionally you can teach an old dog new tricks! I recently attended a
aquarium club meeting where a brine shrimp expert spoke. I learned that
the surafce area of the hatching container determines the number of cysts
that can be hatched successfully. Thus, double the surface area, double
the number of cysts you can put in the container. That is why commercial
harcheries use pyramidal cones as it maximizes the surface area. Here are
some surface measures of common hatching containers:

plastic pop bottle about 43" in diameter = 12.56 sq inches
one gallon pickle jars about 5.75" diameter = 18 sq inches
large plastic snack containers about 8" diameter = about 25 sq inches
5 gallon pyramidal cones 12" by 12" = 144 sq inches
3 gallon water in above cone (my new choice) = 81 sq inches
5" by 12" plastic shoebox = 60 sq inches

Ever wonder why people that hatch very small numers of brine shrimp in
shoeboxes or trays are seemingly more successful that we who use pop
bottles?

Curt Smith

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