Given that pleasing the Admiral makes for a better boating experience for the "captain".....
:dance:
and given the age of your boat....
I would suggest adding a clean-out port to the tank and replacing the ancient supply tubing. The tubing is cheap, altho on most boats the labor to pull the new tubing through the nether regions of your boat will be curse-inducing. :cussing:
Then you
can drink the water -- with impunity, or, with rum.
Been there and Done that. Actually, we are both very happy to have clean tap water just like we take for granted at home.
Thru the year, if the the tank is not used at least once a month, I clean it out and finish up with a quick wipe up with a tea towel (Costco.... bundles are cheap.) with some bleach and water on that towel. For a "port" we have a Beckson 6" spin-out access port between each baffle.
Anyhow, while the filter is a great way to get rid of the more-visible little plant life, it's really nice to know that the tank actually has clean and clear water in it, in the first place.
... Just another "winter project" to keep you busy and out of the taverns and off the golf courses!
Loren