Grant Bruns and John Gorman are seeking $500,000 in return for a 20% equity stake in Ampan, a building product made from agricultural waste. From Season 1 Episode 11 Watch Shark Tank Australia Now: https://bit.ly/SharkTankAUS Subscribe to Shark Tank Global for more from your favorite shows: https://bit.ly/SharkTankGlobal FOLLOW SHARK TANK Shark Tank Global Facebook –…