GPR and Greg :

I am not recommending that you fertilize only that it is a tool to be used in the proper circumstances. If you can grow the right number and size of fish you want without it then by all means don't. I would rather use supp. feeding to add some weight to my adult fish than grow a bunch of small fish that I did not want to manage. Remember that well conditioned adult fish do reproduce more yoy to manage and keep in balance. It is about managing for your goals not just growing as many fish as possible to manage. Get Greg to give you an assessment of whether your pond will produce what you are looking for in terms of # and lbs of fish and how to manage to get to that goal. If it requires adding carrying capacity then use supp. feeding first and if more is needed then use fertilization. If it requires neither then don't.