It needs a gate valve because of the excess bubble production, the older models like mine (a CS6-2) only had a pipe that you could use to set the water level at 2 different places, this wasn't low enough and the skimmer just overflowed constantly. With the gate valve you can finely set the water level much lower and it won't overflow.
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Christy's Reef Blog
My 180 Build
Every electronic component is shipped with smoke stored deep inside.... only a real genius can find a way to set it free.
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12-14-2008, 06:10 PM
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