Yah I liked the idea of using the rectangular tanks as they are so much more space efficient. The place where I'm getting mine is called Pro-Mold in Crossfield (30 min. North of Calgary). He's offering the 30 gal rectangular in black at 2 for 1 ($155 for both) Normally he sells them in the white but he ordered in a bunch in black for a customer. Turns out the guy was not a reefer but a "reefer dealer" who had his grow-op busted before he took delivery

Pro-Mold has a big selection of tanks anywhere from 2 to 2000 gallons. I just picked out the 30 gal as it was the right size (50"x15"x9.5") for the best price.