I don't feel like the price of cypress from a pet supply is really all that high. I've never really considered getting it anywhere else. I mean, it's what, $7 for a 10qt bag from LLL? If you want bulk, LLL has 2cu ft for under $20. I mix cypress with about a quart of coconut bark and cover a 36x18in tank to a depth of about 2.5in. Even then, it's not expensive.

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