How big is the pond? If you want big BG, don't stock the GSH.
Nevermind, if I would only read the thread title..........

1,000 HBG, 150 LMB. Take out every LMB that gets over 15" long, feed the HBG a good pelleted fish food.
See what sprkplug is growing in his pond with HBG and LMB.