Also a good practice is to have up to 10 cultures going at a time. you dont want to have a food shortage. I know some people start about 7 cultures every week or so to insure a constant flow of food. It is not so hard with other critters couse you usualy only have to feed every couple of days and you can change it up but PDFs its all about flies, and the ocasional spingtail snack if you like.
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In all things of nature there is something of the marvelous.
Aristotle
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