Weekend Project: Lily Pad Pool Warmers

Weekend Project: Lily Pad Pool Warmers

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Use hula hoops to keep your swimming pool warm year-round using the sun.
Get the PDF for this project here: http://blog.makezine.com/archive/2010/09/weekend_project_lily_pad_pool_warme.html
For more great projects: http://www.makezine.com
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