I'm thinking about making a waterfall

[wiperhunter2]

I've just been looking so far, I have a few ideas. I want the water coming off the top of a rock, then dropping about 2ft, into a small pool, then going from there into a larger pool, about 1ft below the upper pool. I'm not sure of the exact size of either pool. I guess I need to look at some web sites that sell those pools.
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