What are you currently housing them in? Tanks? If so and you're planning on expanding your collection, tubs might be a better route to go. You could put newspaper in those as substrate, as they tend to hold the humidity in better than tanks anyway and wouldn't be as much of an issue then. As to finding the cypress, I can't help you there. Sorry! I ordered mine off the web and while shipping was a painful experience for the cost incurred, that's the only place I was able to find it. Good luck!