Quote:
Originally Posted by BCOrchidGuy
Recent articles suggest 2 inches of sandbed does as much for denitrification as any deeper. The 2 inch also becomes completely populated with critters. I'm building my refugium and I'll be sticking with 2 inhces. From what I read though a plenum is a good system if you live in an area that has frequent power outages. I don't understand the theory behind that though.
Doug
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Could you point me towards those articles please. 
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Bob
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To be loved you have to be nice to people every day - To be hated you don't have to do squat.
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