Good genetics that take a while 10+ weeks, high intensity full spectrum light, low temps' good nutrients hydro so you can feed often rockwool or something like a flood tray drain to waste something you can really feed. I have had hydro 25 years ago from ag majors at Cal poly slo that shit was half weed half science experiment and is still the stoniest weed I have ever smoked by far, it was yellow light green and frosty as you can get taste was all hydro but the high would come over you with a flush you face change the room of 5 guys would get really quiet to stoned to talk the growers really pushed the genetic past what you would think was possible I have grown outdoor in very good conditions for a long time with great genetics and never gotten close to the thc. Whis you luck I would try that Fatso strain I heard they took it almost 80 days with thc increasing the whole way I have had chems that never seem to finish with the right environment I'm sure you could push some numbers pretty high.