Ronco Plastics Ronco Plastics marine Tanks
is your best source for a tank. They make TOP quality thick-walled water and waste tanks for a very reasonable price
and have more than 400 shapes and sizes, over 100 of which are non-rectangular, and they install fittings in the sizes and locations specified by the customer when they make the tank.
As for the best place to buy marine
toilets...that depends on the type of toilet. For the kind of use you describe I think you want one that's a no-brainer to flush and impossible to clog...and that would would be a direct drop RV toilet..just step on the pedal to open a the trap door in the bottom of the bowl and start the flush water...and everthing slides into the tank. That would require installing the tank directly below the toilet, btw. Any of the Dometic 300 series shown here https://www.dometic.com/en-us/us/pro...tation/toilets
would be a good choice.
Gray water can legally go directly overboard
, so your tank only has to hold toilet waste. The RV gravity toilets connect to the boat's fresh water plumbing
, but only use about a pint a flush...so I'm guessing that a 50-60 gallon tank, fairly shallow since it'll hang between pontoons, would be about the right size unless you plan to carry a "cast of thousands" onboard. Plumbing
is very simple: a vent line and a pumpout line.
You're welcome to give me a shout if you'd like to discuss in more detail than is practical in a forum.