I'd be nervous to eat your blackberries knowing now how they were watered. Where did you find the plastic vent hose? I've been looking all over the place but I keep getting speeches about how they cause fires. Then I give them a speech about how I don't want to spend $22 on 25 feet of their aluminaflex stuff for a cold vented application that will obviously self-destruct in a ball of flames if I use plastic.