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Re: Daphnia

Dave Sanchez writes:

> Hi all I need help culturing daphnia. i buy the eggs but they never hatch. 
> any ideas?

I've read that the 'eggs', or cysts, form when the light cycle drops below a
certain period per day.  They 'hatch' when the cycle rises above 14 hours a
day.  This allows them to survive up north where the short day cycle signals
the coming of winter.  Try giving them more light per day.

Bob Dixon