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Hydor deflectors
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02-10-2007, 04:03 PM
AndyL
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Join Date: Oct 2004
Location: Beiseker
Posts: 900
There's a big plastic ring on the back side of the nozzle housing - it's intended as a mount for a foam biofilter (freshwater applications). 99% of saltwater folks will trim it off leaving just the bullet shaped nozzle.
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