I know Trionic well.
The owner was the sales engineer at Kracor for a number of years...left to start his own company. They build a decent tank, but have a very limited number of molds...and unfortunately learned from Kracor that 4-6 wks delivery should be normal and so are high prices.Check Ronco Plastics (http://www.ronco-plastics.com)...they build a better quality tank for considerably less $$, and have more than 400 shapes and sizes to choose from, including over 100 that are non-rectangular. Chances are, they have the same shape that Trionic has...or something else that's an even better fit. Delivery time is 2 weeks or less. And you get to spec your own fittings locations and sizes to be installed by them when they make your tank.