After a July 2016 D0 fish kill in my 9ac pond in Chester SC, I added aeration system and confirmed BG and TFS survived. I added 150 -10"-12"LMB in fall 2016 and 200 6"-8"HSB fall of 2016 and 150 HSB in spring 2017. I can now easily catch BG and LMB but have not caught any HSB. Any thoughts on what is going on? Will HSB need need more time to grow?I would appreciate your response. Thanks-Al Allison