Just a word of the wise.
You do not have to wait 30 days of cycling for good bacteria to form. there is a shortcut that cuts that time down to about 10 days.
cycle your water for a few days to evaporate the chlorine, then add a bottle of pure Ammonia or food grade Ammonia then cycle for a day.
add a gallon of Bio bugs (AKA Nitrifying bacteria) then circulate for one week. test with test kit to confirm bugs took to the system then add fish and plants.
adding filter material around the inner walls of the fish tank and through out the sump and gravity feed tank will be an excellent place to house billions of good bacteria that are the backbone of your Aquaponic system converting (NH4) Ammonia to (N02) Nitrites then to (N03) Nitrates which is the nitrogen the plants require and thrive on.
by using the Arduino platform it allowed me to automate my system in a low voltage/currant set up that can be powered by just two solar panels using AC as the backup.
I used the Leonardo for my set up but actually any Arduino will do.
Happy Arduino Aquaponics. 