Forgive my snippage;

Tony wrote (snip)
What would you recommend?

RichH wrote (snip)

Hardware store type filters are not meant to be used as a 'single pass
filter'; but, are meant to be used wherin the fluid is re-circulated
several times

in a recent diesel polishing type thread it was suggested to use a
larger micron rated element and to recirculate as much as possible:
not really that much difference between setting up a diesel polishing
system and setting up a water polishing system, 12v water pump and
"standard?" filter housing (find a variety of off the shelf filter
elements at most any hardware store)
already in place on my boat so it would seem all that would be needed
for me to create water recirculation is a TEE with a couple onn/off
valves to divert water back to tank.


You usually get what
you pay for... a hardware store filter typically in the $2-$6 range, the
same (but precise and compliant) filter from a technical manufacturer
will be in the range of $15-25.

? get inexpensive ( cheap !) filters and change often --thats been
my strategy thus far ( string wound filters ), waters OK; but the
waters only passed through filter once on way to faucet..
probably wouldn't cost much ($10-$20 ??) to divert back to tank.....

how important is activated charcoal (AC) in a filter if main tank is
filled from municiple water supply : does AC (or other _______ (?)/
finer micron ratings) rank higher in importance when improvising water
supply ?

My Irwin 37cc is the perfect boat for catching rain off the deck, the
previous owner bought but never installed the valves, figuring the
water we catch on deck will not be of the quality delivered from our
municiple supply and when cruising captured rain will be our greatest
supplement; aside from treating tank/captured water with bleach; if I
added a circulation path to the water system what guidelines would you
suggest in filter selection?