Upgraded to 240w kingbrite

So you had a 80 x 80 or 2.5' x 2.5' with 9 plants in it 10L pots???? that must have been a very full tent, no wiggle room at all. Then you harvested 9 oz total dry weight off of it all? 9oz on 120w = 2.12g/w that's impressive if its true. Quality of the buds is another concern but still big harvest. I would be worried about air flow and WPM or Molds with a tent that full. You should upload a diary of this grow you speak of, I'm sure other are curious to see it and the quality of buds. As for the question, 240w is more inline with the needs of the plants and can help you hit the maximum DLI. I would guess you where not hitting a high DLI with a 120w Q board in that tent especially if it was on 12/12 vs 16/8. You could get away with one plant in that tent and bush it out. you could also do 4 plants or 2. A Sea Of Green SOG would be an option for 9 plants. but 10L pots seems like a lot.I would aim to go with a smaller pot size but if it worked for you. A+ Side Q : when you say most buds were baggy, did you mean larfy and airy? like not dense and compact?? This can be inpart from a week light or genitics.

Almost a 3x3, 9 plants will fill that space very fast. How often can you visit? Personally I can't visit more than once a day so I make my pots a little bigger so they can go a little longer without needing my attention. 9 smaller pots is doable but will require alot more attention to keep everything ticking along, so long as you are prepared for that there is no right or wrong. Mainly genetics, then light exposure and nutrients. The sad but true “secret” is most buds get vacuum sealed in a bag at some point. So don't be so worried about comparing to some picture you seen somewhere, it's more or less a Mc Donald's burger, looks great on the photo. So long as she smokes clean.

1 fem stretched around box could give u as much as a bunch of autos. Correct feeding is 80% of succes I know ppl who grow on 25-35w leds (handmade board with 30-50 bulbs)