You should be able to put a cross-over tube between the tanks, but keep it high so that you get extra capacity only when the gray tank gets close to filling. Also, more liquid and less solid waste that could possibly backflow into the gray tank. NRC may be able to give you ideas for getting more capacity or a larger gray tank.
If you go to Elkhart area- you can see Showhauler, NRC, Haulmark, Chariot and Renegade. They are all within 20-30 minutes of each other.
Thread was hijacked somewhat, sorry
Bob
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'18 Renegade 45'
Volvo Twin Screw, 500 hp I-Shift 12 Speed
30' Renegade Stacker Trailer
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