Forum Discussion
miltvill
Oct 21, 2013Explorer II
I have a Thetford two wheel tank that is 29 gal. My gray tank is 30 gal. When full my Thetford is over 240 pounds. A larger tank may be to difficult to dump. So, you could go with a smaller tank and dump it more often. I would not worry about matching the size of my tank to the size of my holding tank. I leave my gray tank dump valve open and let the water run into my tank. Then dump when it is almost full.
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