Holy sagging water tanks, Batman!
Since I was already having a venting problem with my FW tank, I decided this weekend to look and see why there seemed to be a bulge in my enclosed underbelly. The venting problem was a pretty simp...
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My trailer has two 50 gallon tanks and they are held from underneath the tank by 3 (1/4"?) steel bars underneath of each tank and so far they are holding up fine. I think most all campers could be modified to use the same setup very easily and you could ditch the plywood/OSB.
