Shane McKenna wrote:Rob Torcellini of Bigelow Brook farms is using one in his geodesic aquaculture greenhouse. You can do a search on here for him and find his youtube channel. He has a lot of info on how he built his, and somewhere he posted some data on performance as well.
Here is one of his videos,
more in his channel you will find very to the point. I am stealing a handful of his ideas on the auto feeder and was glad to have found him on the internet.