Homedepot offers XtremepowerUS Solar-Powered Algaecide Killer Pool Ionizer and Purifier System 90120-1 for $57 (orig. $116) with free shipping.

Product Description:
The XtremepowerUS Solar-Powered Pool Ionizer and Purifier is the perfect solution to your algae problem, using modern technology to convert energy from sunlight to help clean and sanitize the algae and