I really like your fishery plans...but if you have been invaded by BG be aware your SMB and HSB won't manage them alone. It's not the end of the world - you'll just likely end up with a stunted BG population, but it won't likely affect your RES, HSB or SMB. Your YP might be affected, however, as BG and YP can compete for the same forage items, but hopefully the abundant YOY BG will provide plenty of forage for the YP. If you adopt a pellet feeding program it will help both your BG and YP overcome competition issues.

IRT high levels of organic matter in your pond...looks like you have power close to the pond - aeration can help speed up the decomposition process and boost DO levels, too. Something to keep in mind - considering the size of your BOW, you won't have to break the bank to implement a system. Sounds like there are plenty of forum folks who have had success with DIY systems which lowers the price even further.

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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