Quigibo I don't agree with that method. While there are a number of methods that will work , I would not use that one. Here is why. While they are at first sized for that to work they IMO soon out grow that situation. At first they all will (FH ,BG & LMB) be eating plankton and small bugs etc . That will not be the case in 4 mths. I don't want to take the chance that those 2 in LMB by Oct are big enough to eat my ,by then 4in BG. Those BG are the brood stock and I don't want them eaten. By staging the LMB 6 mths behind the BG that will not happen. Look at it this way. The reason in nature that LMB and BG are born at or near the same time is so the yoy BG are available for the yoy LMB to eat when the yoy LMB get big enough ,which is about the time they quit eating zoo-plankton and little bugs. Sometimes that is the first BG from spring spawning sometimes it is the next or next BG spawn in summer. But why take the risk as you will not have second and third batches of young BG this year for the LMB to eat only your first stockers. Maybe the LMB will only eat the FH during this period but I would not bet on it with my BG brood stock.