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[cg]

Hi Brendan

You can get it at most shops that stock some reptile supplies. I got it for $10 for one brick or $20 for 3. One brick give close to 50mm easy cover over the bottom of 2ft tank. You put it in bucket of water and it all comes apart and then you dry it out for a few days in sunlight.

Alexahnder, I have a bredli so not exactly high humidity specific. I have dried it out thoroughly in sunlight first so hopefully there wont be much moisture in the substrate.

Cheers CG