Yes, I agree it won't work well if the TP are reproducing and this is why I recommended TP YOY. Ideally TP fry don't show up until the end of grow out. In Swingle's treatments, the Moz TP did not always spawn even though they reach sexually maturity within the grow out. In his treatments, when they spawned the fry were a small proportion of the biomass of TP. I guess the devil is in details in terms of replicating Swingle's results. The age of the TP are important. Their hatch date should be in May or early June, no earlier. Overwintered TP of any size will reproduce soon after stocking and produce the results that you warn us about early in the grow out. If you followed Swingle's protocol then you have given me some food for thought.
