Used for several months. Adds extra capacity to your skimmer collection cup and the overflow safety is what saved my A$$ several times. There's a float switch that shuts your skimmer off if it overflows. New at $185 at PA, selling for $100
more info here-
http://premiumaquatics.com/aquatic-supplies/CV-WC-140.html
more info here-
http://premiumaquatics.com/aquatic-supplies/CV-WC-140.html
