An acre is 43560 square feet. A 60' x 50' pond would be 3000 square feet. So, 43560/3000 equals approximately 0.07 acres. If we assume a 4' average depth, it would be about 4000 cubic feet. That is about 30,000 gallons.
Pool water in my area costs about $450 per 10,000 gallons.
If you want to fill it fast, and it was in my area, I'd buy the water rather than possibly running my well dry.
Purchased pool or well water will be pretty pure. I'd suggest you Google "aquaponics" to see how a combination system of raising fish and vegetables gets started up. It will guide you to getting the water conditioned for fish.
It needs oxygen -- I can't be much of a help in adding aeration. But there are a lot of experts here.
It needs nutrients to provide what the fish need. There are many ways to do it.
Don't put all the fish in at one time. You need to build it up like a pyramid to what you will be trying to raise, unless you plan to buy fish that are already accustomed to eating commercial feed. Then you would need to establish a feeding program.
I'd strongly suggest you buy a copy of the book
Perfect Pond ... want one? You can get it directly from Pond Boss or from Amazon.
Good luck,
Ken
