Hi Im a beginner first round whit led and grow tent spider farmer sf-4000 dimmable nob and a 120cmx120cm ×200 cm i plan to go for 9 autoflower in 12,5l airpot. 5 Nothernlight autoflower and 4 Bcn critical xxl autoflower. Is that too much??
If you are attempting to go for a sea of green you should be okay. Just make sure you have proper air flow and ventilation to avoid mold and mildew as your plants will be very close to one another especially in flower. Good luck!
Honestly, yes way too many autos for a tent that small. I grew 5 in a tent that size and it over grew the tent. You would be better off with photo seeds and a sea of green with that many.