Will do.
Can you show your set up with 6 plants? I thought these lights are not sufficient to cover as many as 6 plants.
Somehow I think that 6 plants under two 170W LED lights will do the best for me. What I am going for are buds and what I am the most limited with is space. So the solution is to squeeze the most out of square meters not plants.
I grow in 18/20l containers and I put 6 plants in 1,2 x 80 cm area. I have two grows of 6.
First setup 44 days, average height 72 cm. Royal Critical and Northern Lights (Both Royal Queen Seeds).


Second grow at 30 days average height 37 cm. Bellow you can see Think Different and Northern Lights.


I could grow 1, 2, 4, 6 or eight. Or maybe more with smaller air pots and dwarf strains. I decided for 6. I hope this will be the best per m2. Besides, I do not want the risk with single plant (or 2).
As you can see plants do not grow far over pots because they have already touched the walls or another plant with leaves and have learned the limitations. I also cut smaller unproductive outer lower branches so that everything is concentrated above the pot - 40 cm x 40 cm per plant.
I will try other setups also and measure buds per m2 with 2, 4 and maybe more, but somehow I do not like small plants.