fluidized bed reactors ???

[onevia_01]

Has anybody had and exprience with or heard of a fluidized bed reactor.It is used as an extremely effective medium for de-nitrification mainly used in the waste water industry and apparently used in the aquarium industry, It does sound very interesting.

I think it is a fairly new idea in the aquarium industry.
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[kodyboy]

no not new, great to reduce ammonia to nitrite and then nitrite into nitrate, unfortunately it builds up nitrate quickly (much like a trickle filter). Great for fish only tanks, or raising fish like salmon, but with live rock/sand not needed.