Here you can see the right grow bed. The auto siphon works just fine so far without any of the weird tricks I've seen many others add to the pipes to get them to work. The red tube is from an old habitrail setup for ferrets. It's a larger version of the tubes people set up for their pet hamsters or mice. Currently I have planted onions, russet red potatoes, cabbages, eggplant (in the smaller planters), purple carrots, corn, and Brussels-sprouts. The grow bed fills and drains every 12 minutes.