Boyd Chemi-Pure Blue - 11 oz Silicone It is designed to service

It is designed to service larger Mag-Drive systems when the original impeller is worn

Place the inside magnet in the aquarium and align the outside magnet through the glass

and overall reef vitality

Standard Thread 1/2 Inch Features

Boyd Chemi-Pure Blue - 11 oz Silicone It is designed to serviceBoyd Chemi Pure Blue 11 oz Boyd Chemi Pure Blue 11 oz is a larger all in one chemical filtration media unit for reef, marine, jellyfish, and high pH freshwater aquariums, using premium activated carbon and ion exchange resins to help maintain crystal clear water. Boyd Chemi Pure Blue 11 oz Media for 75 to 100 Gallon Aquariums This 11 oz Chemi Pure Blue size is suited to larger reef and marine systems that need ongoing chemical filtration, water