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Old November 29th, 2014, 06:27 PM   #2
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Join Date: Feb 2014
Posts: 164
Rep Power: 14 dsuperman is an unknown quantity at this point

Thats the way to go now. I would imagine one would have to employ many roof tops if you wanted to make it really profitable. At any scale , just the fact you are cutting out pesticide and fertilizer runoff is a plus in itself.
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