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Message: <blockquote data-quote="crazyeddie" data-source="post: 520843" data-attributes="member: 1073">Check out Moeller poly tanks sold through Ocean Link Inc. They offer a ton of different sizes, capacities, shapes, fillers, pickup tube locations, and with/without sending units for gauges and they have the blueprints for every tank on their website. Find one that suits your space constraints and fabricate a tray out of angle aluminum and straps out of aluminum flat stock to hold it and secure it to the hull. The hardest part is deciding where/how to mount a filler neck and fuel cap as 2" marine fuel filler hose is thick, heavy, and not easy to bend in a tight radius. The tank you select needs to be mounted with pickup tube end of the tank facing the transom so that it doesn't suck air should your tank be near empty and the hull in a bow-high attitude. You'll also need a tank breather that mounts through the hull well above the water line to vent fumes away from the hull. The breather hose needs to be marine fuel-rated breather hose (most are 5/8") and you need adequate space to route the hose up from the vent fitting, shaping it into an upside-down p-trap, before running it down to the tank as a means of blocking water from entering the tank through the breather hose should you get slapped around on the water. I spent more time in my boat with a tape measure, looking at blueprints on my laptop and visualizing what would work and what wouldn't, than I spent actually installing the tank. Plan carefully though, most tanks are made to order and cost about $50 to ship so you don't want to send it back!</blockquote>

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