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http://freshaquarium.about.com/b/2007/12/30/infusoria-culture.htm
You could try out some infusoria. It would probably be quicker to just hatch out some brine shrimp though.
I am setting up a 75 gallon community and I plan to have prolly 2 pairs of apistos, I was wondering if they need the inside of their caves to be smooth? I don't really want to use flowerpots, I was hoping to use some stone, to keep it a bit more natural looking. Also, where should I position the...