re:High-Intensity lights question

>Is more intense light really needed to grow algae or just longer hours?

You can probably get waterborne algae either way, but longer hours is 

>For my daphnia culture have a plastic garbage pail with a 100 W bulb mounted
>in the lid.  I fertilize with a little garden fertilizer and leave the light
>on all the time.  There is plenty of green algae growing on the sides and
>surface and lots of daphnia.

If you add snails, you'll get more waterborne algae, but the daphnia will 
probably do a good job of clearing it too.

>I would love to get the green water, suspended algae.  I guess I have to
>wait for spring to get a wild culture.

Nah.  Just put a few snails in.  You should already have waterborne algae, it 
just needs an advantage over the filamentous algae.  The snails will quickly 
multiply and consume the algae, leaving your tank a nice fertilizer soup.  The 
waterborne algae won't be able to resist growing, although the daphnia may 
consume it as fast as it grows.

David W. Webb
Enterprise Computing Provisioning
Texas Instruments Inc. Dallas, TX USA
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(214) 575-4853 (fax)    Internet:    dwebb at ti_com
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