You can have a look at this caresheet for the general care:
http://www.thamnophis.com/caresheets...ake_Care_Sheet
And this article may be very nice to see which fish you'd best give them:
http://www.thamnophis.com/caresheets...title=Thiamin,
I'd also like to be a bit cautious about it. Like Roy says, cheap certainly not always means in good health...