Can you try eBay?
I believe you can use watered down egg-yolk, but I've read varying success about that, same with using frozen foods (some people have it for an emergency, in case something happens to a culture). I've seen liquid fry food in a pet store here, not sure about the success rate with that.
Take an hard boiled egg, break off a small piece of yolk (I say no bigger then the size of a pea), put it in container that can be closed (an old vial like the ones bbs eggs come in is handy), add water and shake the whole shebang until the yolk is dissolved and the water looks cloudy. Then pour a tiny bit into the fry tank each time you feed or use an eye dropper if you have one and add just a couple drops. You can keep the rest in the fridge for a few days.
Don't use it more then twice a day, it degrades the water rather quickly. Also, don't use it for too long, a few days, then switch to something more appropriate like VE, MW or BBS (all of the above be best).
Last edited by DefyingGravity; 02-09-2010 at 10:05 AM.
Reason: added info
when culturing infusoria are you suppose to put a lid on it or not? i've read several articles about this and they're all saying different things, to cover and not. put under sunlight and not? which one?
I personally would say lid, but I'm not sure, I've never done it myself, I just think that because all the cultures I've set up of other things needs lids, but some aeration. The article I said says to put it in the shade, so I'd go with that. You could always set up a few (with lids in shade, without lids in shade, with lid in sun, without lid in sun) and see what works best?