New fish

Well I have been sick for the last couple of days, but I made a lot of food with ginger and garlic and loaded up on vitamin C and feel better. Today my friend Jason, of North Texas Aquaponics, and I went and picked up some Tilapia. I bought 6 full size fish. On the drive home Jason and I discussed ways to heat the tanks. Jason has a very clever idea, and if your interested please comment and I will give you his info. Right now I have aquarium heaters in my systems, and the temps thus far have stayed above 65 degrees. I am starting to worry though that the falling temps here in DFW are going to possibly kill the fish. I have thrown around the idea of making a solar recirculating heating system, but have my doubts. I may just put one more aquarium heater in each system, but would love a way to lower energy use. I am open to any and all ideas. I look forward to hearing from you. I will have more photos and videos up soon.