Steve, did your water temps have an impact on growth and did you feed mostly at dawn or dusk? Hydrated pellets? Optimal?
I started a similar project on May 8th feed training 104 fingerling RES in a tank out in my shop, I am getting ready to release mine here shortly. I have approximately 25 RES that haven't grown all summer that are still 1-1/2" to 2" in size, the rest have grown quite a bit with one 8" shooter in the group. I have lost 3 very emaciated RES in the last couple of weeks.
Tell us what you learned.