Hello I have produced 4 lbs in a 4x4 tent useing 400watt hps/MH AND A AGLEX LED LIGHT THAT WAS 240WATTS I was growing in 5 gallon air pots useing nutri + nutrients train your plants keep environment on point and I did not use co2 I veggies for 3 to 4 months and bam I was growing gorilla glue...