(no relation to the VegoMatic Ronco)...they make TOP quality rotomolded PE tanks for a very reasonable price and have more than 400 shapes/sizes, 2-250 gal, 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. You can also specify translucent or black...just be sure to specify WATER...'cuz water tanks and waste tanks are a different curing process.