Pluckit
I grow food on my rooftop using Aquaponics. I have been blessed with over 65 different types of veggies. Have a see of my instagram.
I now grow and sell to a hyper-local subscriber base. The financial model is lucrative and after 4 years of regression, I can say with confidence that Aquaponics is the most sustainable method on a rooftop.
My course on Udemy will join all dots for you in 30 mins. Once you have the basic knowledge - you can apply and design your own system the way you desire.