Love is in the Air when Las Vegas Weddings asks ATM to build an Old-Vegas themed tank and Heather & Wayde renew their wedding vows. At St. Leo University in Florida, it's gonna take some real brains to get a giant tank into a new student common area.

Brett and Wayde visit New York to create a Cleopatra-inspired tank for a boutique hotel in the Catskill Mountains. In New Jersey, the boys are challenged to build a Lava Lamp tank for the headquarters of Spencer's Gifts.

Brett and Wayde play with when fire they make a tank for the Fairleigh Dickinson Devils. When the Devils ask for flames inside the tank, there's no saying no or else. Back in Vegas, a team of hat makers want a super-sized top hat aquarium.