I know several of you out there have your own minnow tanks and I am at the point that I am adding one due to trouble getting minnows when I want them. I am starting with a 30 gallon blue barrel and wanted to know what you feel will be the max number of minnows (lbs) that I can safely keep in there for an extended period of time. I know conditions and other factors will play a part but just in terms of the number of lbs it will sufficiently hold, what are your suggestions? Thanks,