3G-STANDARD-20-CLEAR-PR20 Pentek Whole House 20 inch Filter Housing
Product Review (submitted on December 6, 2012):
I purchased this not to use as a water filter but to use with my aquarium as a CO2 reactor to help my aquatic plants grow. This is the perfect size to use as a Cerges CO2 reactor and requires very little modification to get it up and running.
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