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Re: Live Foods Digest V3 #111

Many daphnia problems come from overfeeding, particulary of yeast, which can 
outgrow and outcompete the daphnia once the yeast gets too far ahead. 

Also, if you had a bloom and didn't harvest most of it, that can cause a 
crash.  Why?
Maybe a rapid buildup of wastes in the water?

I have two tubs in my furnace room that produce more daphnia than I can use.  
To prevent overpopulation I harvest and freeze the excess.  I feed about a 
half teaspoon of a mixture of yeast and soy flour, dissolved in water, about 
5 days a week, when the water gets relatively clear.  I don't aerate.

Good luck!

In a message dated 1/22/2001 4:10:05 AM Eastern Standard Time, 
Owner-Live-Foods at actwin_com writes:

<<  I have had a 15 gal tank going for a few months now with Daphnia. 
 The other day when I was cleaning out the fridge, I found some cucumber
 that had gotten pretty soft, so I thought I'd through it in the Daphnia
 culture.
   I guess that was not such a good idea because now there is hardly
 anything to be seen in the tank - save for a few copepods.
 
 Other incidences that have occurred around the same time:
 
   I dropped the air line from about 1.5" from the surface to the bottom
 of the tank.
   This seemed to clear up the water pretty quick - it would usually
 remain cloudy for a few days after feeding, but changed to becoming
 clear the next day.
 
   I was feeding a mixture of yeast and crushed prepared fish foods -
 enough to cloud the water, but not completely choke them out.  
   I had a huge bloom about three weeks ago, but the pop'n has gradually
 decreased until it crashed yesterday.
 
 Sorry for the longwindedness, but I tried to be as thorough as
 possible.
 
 Thanks
 
  >>