Well for my money
its clear that a seagul filter is not the way to go.
For one, it only filters the water
you drink, not what you bath in, or that goes into the hot water
heater. And that water IMO needs filtration as well.
On my boat it came with a carbon type cartrige filter that works pretty well, but of course I would not drink it. I have removed the 2 aluminum tanks
and believe me after 25 years they were pretty foul inside, and have ordered poly plastic tanks
from ronco plastics. All new whale tubing is waiting to be installed. Once that is done, I am going to install a 3M Aqua pure BCV 140 filter system. This filters down to 0.2 micron, has a 25000 Gal capacity, overkill I agree but for the money
its a good deal, and will filter at 2.1 gpm.
The seagul only (with the manual pump) filters to 0.2 micron, and only 1000 gal which is very sufficent if your only using it for drinking water
but at what cost. A seagul filter costs $572 on defender, and the replacement cartrige is 85 bucks for 1000 gal.
the 3M is 200 bucks, replacement cartridge is 84 bucks, and it can last for 25000 gal. (yes that is 25 thousand gal.)
Also one of my tanks will be 15 gal, and only hand filled or via a watermaker
, with a whale hand pump at the sink, a smaller 3m filter and used for drinking water