Pretty much everything you need for a larger tank https://www.ukaps.org/index.php?page=setting-up-a-higher-tech-planted-tank
That is with the exception of the equipment that goes in the tank; try to buy equipment that has been specifically made for nanos. It's smaller for obvious practical reasons, and it also helps to maintain a sense of scale.
Check out our sponsors for nano equipment, for instance nano lily pipes, nano drop checker, nano CO2 diffuser etc.
In the video George mentions he uses a small external filter with a built in heater, does anyone know which one? I’m looking for exactly that but haven’t been able to find one with the heater built in.