07-05-2011, 09:48 AM
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Although you might attempt to culture worms in your main tank, it would require less than ideal (substrate) conditions and you might be further ahead culturing live foods in a separate tank and just collecting for feeding in your main tank. Culturing worms in your main tank would require a somewhat 'nasty' substrate to support them, which may present other negatives and not produce the desired result.
On the other hand, if you have a well planted tank and don't use a gravel siphon to keep the substrate clean, dropping in some tubeflex or other worms in the cover of darkness may not hurt - ???
(just my $.02 worth)