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Rotating biological contactor or bio-wheel: A wheel made of porous mesh rotates, dipping in and out of the tank water and the air
Extreme range, endless adjustment, and a large diameter drag knob so you can easily crank down to max drag
The black is always a crowd pleaser, and the WF looks nice too
This is especially if nearly everyone else present is carrying a camera too
The extra strength provided by the double-layer bottom piece makes it very convenient to carry more load on your journeys
Guys, the area well see today is infamous for its precipitation
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