I apologize for the repetitive information here from my other thread.
The two obstacles as I see them are muck (probably the goldfish are big contributors) and leeches.
I don't know if the goldfish would be your biggest contributor to the muck. From what I gathered in your other thread, I would lean towards your trees and leaves over many years. Are you thinking that getting rid of the goldfish will be the answer to muck? Could you live with the goldfish (in order to keep the frogs) as long as the muck and leeches are reduced?
If it's any consolation, my frogs were back within a year after the water was added again.
I am going to throw out a question for the pros:
If one LMB was stocked, do you think it would more likely go after larger goldfish or frogs? From what I have learned here on the forum, it would prefer the largest food it can safely manage. So would a LMB (say 20" ? ) prefer 8" goldfish or frogs?
