Rusty Allen created a filtered water bottle. Will his invention earn a deal on Shark Tank Season 4? Find out in our Gobie H20 update! Shark Tank Gobie H2O Update Entrepreneur: Rusty Allen Business: Unique bottle with state-of-the-art filter Ask: $300,000 for 10% equity Result: $300,000 for 40% equity contingent on being able to sell…