I am heading up to Imlay city fish farm this afternoon cannot wait. I am hoping I can keep them year round........time will tell. My pond is just shy of 1/4 acre and maybe 8-9 feet deep but I have a 30 gpm well I can run durning the heat of summer hopefully it is enough to keep the temp around 70. My neighbor and I will both be pulling our irrigation water out of the pond so just to keep up with that i am thinking the well will need to introduce 15,000 gallons a day into a pond that is maybe 350,000 gallons.
Make sure you pull off the warmer surface water for irrigation in the summer which is where my overflow is. 1/4 acre is 4 times the size of my trout pond which gets 45 gpm 24/7. I could probably get by with less flow as the pond is 60 F. below 1 foot all the way to the bottom even with day time air temps in the 90's. Hopefully that will be enough for you.
You really want 55 to 65 for trout. I wouldn't wany to go higher than 65 myself.
