Using air injection in nutrient holding tanks, the subject our CANNA Research article. Also in this edition of CANNAtalk: Grow your own parsnip. The Genetics and Breeding chapter highlights the rules of Gregor Mendel. Discover remarkable gateways in What’s Happening! The Pests and Diseases chapter informs you about Pythium. Don and Nicky are in search of the good life. And learn how to water very porous media in our Grower’s Tip.