Re:

["Allen and Sandra" <allensandra at boatmans_com>]

shieber at yahoo_com wrote:
The reportedly typical problem for these is that, if the water tends to
"channel" up through the sand at all, the channelling will become more
and more pronounced.

My response:

The FB600 has a difuser plate at the base of the unit to address the very
problem you speak of.  It has completely taken care of the inconsistent
fluidization problem.  That is a fact based on my own observations and
experience.

Many of the larger fish farms in this area use very large towers of
fluidized media with great success, even with Koi.

-Boat