Hi about to do second grow of 6x fast and Vast, did the last 4 with 600 watt HPS with digital ballast. My mate said I’ll get more yeild if I add another light. I’m in a 120x120 (4ftx4ft) tent. I don’t want to spend loads I’m growing to make rso for Dad with cancer and after these 2x grows I’ll pack it all away.
Any advice appreciated
Any advice appreciated