On Sat, 08 Dec 2007 19:21:04 GMT, Rich Hampel
wrote:

.....
A serious filtration system on a boat has probably an independent
recirculation polishing system (to constantly remove the particles as
they 'form' by agglomeration IN the tank) somewhere at 3GPM 'turnover
rate' constantly pressure feeding a standard industrial configuration
filter of 10" X 2.5" dia., 5uM 'depth' type filter. ....



Welll, well: not only is Rich still making all kinds of sense, but
(now?) he is endorsing 'depth' filtr ation polishing!

Yeppers!

Brian W