This is a quick tour of my fish tanks at night in order of smallest to biggest (10, 30, and 5,000 gallons). In the pool you can also see several blinking lights. Those are acoustic transponders for the acoustic positioning system I also test in this pool. The goal of this project is to build a functioning aquaponics system. At the end of the video you can see my aquaponics system controller in a PVC tube. It turns the water pump on and off every 15 minutes to flood and drain the tube on the pool ladder full of rocks with holes cut out of it. Inside the controller tube is a Netduino Plus with a relay board. I hope to add onto this unit and connect my system to the internet for remote monitoring and sharing with others.