Beyond the Tank

When all five Sharks invested $1 million in season five in the mobile phone breathalyzer, Breathometer, Charles Michael Yim, from Burlingame, California made, "Shark Tank" history. But now, the Sharks question why the current $50 million value of Breathometer is only good on paper, and a dissatisfied Kevin O'Leary checks in with Michael for answers.

In season six, Daymond John made a deal with New York City's Randy Goldberg and David Heath and Bombas, a sock business with a social mission. Although the business is doing great online, the duo question if their limited managerial skills and competition from market giants will hinder their growth potential.

Since Mark Peterson's season six appearance, his sales increased three-fold in the gold panning kit, Gold Rush Nugget Bucket. But Robert Herjavec thinks Mark is possibly missing an opportunity for further growth since he's failed to create a solid social media presence.

Barbara Corcoran invested in season six in the seasonal decoration kits, Hoppy Paws, created by Trina Barkouras from Costa Mesa, California. Trina has been spending her time creating new products, but Barbara has solid reasons as to why that business strategy is not a good one.

Kevin O'Leary can't believe Sara and Josh Margulis from Sebastopol, California, of season six, want to make an extremely risky business model change to Honeyfund, their online honeymoon crowdfunding site. In hopes of avoiding disaster, Kevin sets up a meeting with Huffington Post co-founder Arianna Huffington for a possible partnership.

Lori Greiner stops by the new Gainesville, Florida, showroom of Cordaroy's, beanbag chairs that turn into a bed. She has some key advice on packaging as well as a surprise for the season four chair designer, Byron Young.

Barbara Corcoran's very first deal in the Tank helped Washington D.C.'s Heath Hall and Brett Thompson grow Pork Barrel BBQ spice rub into a national brand. But barbeque is a seasonal industry, so the two successful entrepreneurs created a new product that could be a culinary hit, but they must first get government approval.

While sales for 13-year-old Andrea Cao's massage product, Q-Flex, have increased since Barbara Corcoran and Mark Cuban invested in the company during season six, Q-Flex is still working out of Andrea's garage in San Luis Obispo, California. Hopefully, a visit from Barbara will help Andrea craft a plan to support Q-Flex's growth.