George,
I'm not sure where the LMB came from. The only place it could have come is either by some miracle of nature, or with them mixed into my FH and GSH shipment earlier this year.
I went down to Overton last weekend and bought a bunch of BG from them. They thought my LMB probably came from my earlier FH and GSH shipment once I told them where I got them from.
This fall, I'll go back down to Overton and pick up some CC and some HSB. They said to add a few HSB just to keep the LMB in check and to also add a bit of diversity to the pond as well.
I've been feeding the BG every couple of days recently. It's kind of fun to watch them boil at the surface eating the food. Right now I'm having to focus more attention on the house we're building on the land, so the pond has been moved to the back burner while we work with the Architects and Builders. We're building a super energy efficient house (SIP panels, Geo-Thermal Heat Pump, spray foam, etc) that still looks like a regular house, so it's taking a lot more planning than a normal.
Jeremy