All of my livestock (cows, sheep, and poultry) are watered year round with rain water from gravity fed tanks which also contain gold fish. There is enough water change out that any contamination the fish may cause is far less than the algae that would grow if they didn't have gold fish.
For aquaponics, since it's in the basement in two 100 gal stock tanks, that water is just used to water the plants which filter it and it cycles back to the tilapia. There is a small pump which recirculates the aquaponics, but all other water for both human and animal requires no "consistent" power and is gravity fed. The house tank is filled only on sunny days we are making power.
Am I reading you right? You've got Tilapia tanks in your basement? Would you be willing to share some details? How many gallons, How big are your growing beds? What are you growing? Using for lighting? How does it affect your house regarding humidity and fish smell? How often do you cycle the water? What kind of pump set up are you using? How often can you harvest fish? How often do you need to do water tests? Any extra supplementation for plant nutrients? Are you propagating your replacement fish?
Re: coons. They certainly are active during the day. I can recall 3 occasions where trouble makers have been aggressive during the day... Once returning to kill off the rest of my chickens after a night time rampage... Met up with a .22. On an other occasion, my husband took down a sick coon in the middle of the day. Last summer, I had a Mama and 2 juveniles chase my car down the road, then the same Mama and kiddos chased my neighbor across his yard and up to his front door because he was foolish enough to go out to take their pictures after I warned him about them. I would just as soon shoot a coon as look at it. They're merely glorified rats with striped tails IMO.
On an other note, we've had a lot of turkey activity in our yard lately. There are fresh tracks every day.