fresh water tank maintenance
A recent article in National Fisherman says to bed in plastic, neoprene, etc., but AVOID contact with rubber, wood, FOAM, blah, blah, blah. While the argument that "everyone does it" is not generally the way to go, I just installed new tanks in a Grady White 25 and a Wellcraft 26. The Grady tanks were minimally foamed ("GREAT STUFF" spray insulation foam) and wedged with 2 x 4''s and strapped with boards across the top. The Wellcraft tank was a replacement, 120 gal alum custom made. We foamed the corners to avoid a hard edge against the hull (like the original tank had) and foamed spots all around and will finish with tie down boards with rubber under them across the top of the tank. It''ll last a good 10 years if properly grounded. Amazing what these manufacturers do. Anyway, we also coated the entire tank with GLUVIT, an epoxy specifically for tanks. Keep the moisture off and avoid spots where moisture can accumulate and sit. Get the Nat''l Fisherman newspaper if you want a truly tight-assed approach to tank installation, which, in fact, I might use on my own boat (unlike the factory installations in the foregoing two manufacturers).