I don't know if anyone is interested in growing their own food and vegetables but this Aquaponic system i have built works just perfect. i am i newbie when it comes to programming and i am sure someone could do better but all i can say is it works and works very darn well. i studied Arduino platform for a few weeks and the two programs are the start up which runs for 10 days and the run program cycles 8.5 times in 24 hours.
it uses AC as back up only utilizing the light out function on a charge controller at 24 volts and two solar panels supplying all the power to the system. it has an air pump that is on 24/7 with a water pump on for 8 times in 24 hours and two 24 volt solenoid valves on for 15 minutes every 2 hours. the whole system only takes 60 watts for the air pump @ 24/7, the water pump @ 80 watts for 5 minutes every 2 plus hours and each solenoid valve are on at separate times for 15 minutes every 2 plus hours @ 12.5 watts each.
i have built two systems near my house for people and they are very happy i designed the system and helped them build it. i made a few bucks off of it but not much. and yes i know aerate is spelled wrong.
the system in the video was before i installed it into it's permanent home. the LED lights indicate that stage complete which is LED 1 -5 with the red blinking LED shown upcoming stage. turning the sound up you will hear the relays clicking on and off working flawlessly.