Step 1. Spend time really getting to know the pond and keep a log. This includes mapping it to determine depths. As Anthropic says, 75 years will mean a lot of silting. But, you already know that.
Do you know anything about the pond's history other than 75 years old?
It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.
Without a sense of urgency, Nothing ever gets done.
Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP
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