A fish tank with a bran as a base substrate and feed is ideal, with vegetable layers seperated by hessian sacking (available from a green grocers). Do not allow to overheat, get too cool or any condensation to form. Airation is imperative to prevent moulds and smells, and a net lid is a good idea. CJ Wildbird Foods is a good distributor, call them for a catalogue. The ones I have had in the past (for feeding wild-birds, bats and orphans) tended to go a little funny due to too much vegetation in the tank, so be carefull. A cotton wool ball soaked in water should allow enoguh water for drinking. Watch they don't escape and make sure they are kept in the right conditions without rotting vegetables at all times. Good Luck!
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