Calusa Sailor

Ronco Plastics ronco-plastics.net/marinetanks (you'll have to google it, I can't post a url here) is your best source for a tank. They make TOP quality thick-walled water and waste tanks for a very reasonable price and has 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.

Please switch to email if you have more questions or need the url for the Ronco marine tank catalog: peggie(dot) hall(at)gmail(dot)com