A quarantine tank for some hands on clients has the ATM team wishing for solitary confinement, Brett buys a clunker to build a car theme tank in record time without considering the consequences, and Brett is nervous to use his new scuba skills.

Wayde and Brett explore the other side of the law and design a 1000 gallon mob inspired tank, Heather reluctantly enters a shark tank to help place inserts, and the ATM team gives a relocated New York family a one of a kind NYC themed Phone Booth Aquarium

A fish feeding problem turns into an all-day affair, a tank on hydraulics gives a new business a lift and makes waves with a hidden engagement ring, and the owner of a free standing 1950s diner gives some heavy demands for a tank to match the décor.

The finishing touches are put on a 57,000-gallon aquarium in a Dallas megachurch; a woman surprises her fiancé with a beer-keg tank for his basement hangout; Brett makes unauthorized enhancements to a lawyer's reception-desk tank.

Brett's feng-shui tank triggers a spiritual journey that gets on the crew's nerves; a children's book-themed aquarium for a little boy's bed becomes an emotional roller coaster; Heather gets revenge on her bosses by scheduling them for a shark dive.

A tank for a skateboarding park tests the durability of the company's materials; a candy-theme tank for a restaurant's patio is complicated by extreme temperatures; the team hope to surprise Wayde with an octopus tank for his birthday.