Fluidized Bed

[Dabbler II]

Is a FLUIDIZED BED filter the same as having a DSB in your tank?

[mogurnda]

Nope. A fluidized bed filter percolates water constantly through sand, keeping nitrifying bacteria supplied with aerated water. It provides a large surface area for converting NH3 to NO3, but stops there. A DSB is deep enough to be anaerobic in the lower regions, so that NO3 will be converted to N2 and bubble out as gas.

The best use of a FB filter is where there is high bioload, such as holding tanks or when curing live rock. In a properly stocked reef or FO tank, there should be no need.

[Dabbler II]

Thanks:)

[mogurnda]

Funny thing is, I own two of them. They are easy to DIY. Just have to find a use....