Its a bit tight in there! In early flower when we can keep the 3 strains at the same height the lights all touch each other. Barely get a playing card between them. Then they also each touch 1, 2 or 3 walls depending on which quadrant they’re in.
The lights are
@Mars Hydro FC6500’s. Looked at the 8000’s but they’re 115cm square. Wouldn’t fit. 6500’s are 113cm and so do (just!) then 21 plants in 5 Gallon Airpots.
This very tightly packed grow space I find quite easy to work with.
I don’t really fit inside there apart from harvest and swap the girls in veg day. So its not an issue. For & Co - yeah she’d probably like a little more space
Nick