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Old 05/26/2016, 08:01 AM   #2
Avast Marine
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Join Date: Feb 2006
Location: Northern VA
Posts: 2,446
Hi, the Rox carbon is full of millions of air pockets. It needs to soak in water for 24 hours before use so it saturates and doesn't float. The easiest way to do this is to fill the reactor with carbon, and use the top screen. Then turn the pump on with the valve barely cracked so it keeps the barely pushing through the reactor. After 24-48 hours all the air pockets will be gone and you can simply lift the reactor off the base and all the saturated carbon will fall to the bottom, then you can adjust flow so it fluidizes. Once you know that valve position for rox carbon, the next time you change it out you can simply put it on the reactor with the correct flow rate already set and after 48 hours you just lift it off for 30 seconds and drop it back on and it should be perfectly fluidizing.


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