A 150 watt light is all you need for that area. All the crops I just posted were grown under 150 watt Maxisuns and averaged 2.5-3 grams per watt. 30-35 watts per sqft is a good way to figure out how much light you should be using.How much light would you need in one of these 5 sq ft MOL tents to max out the space/yield? I have a Niemi HLG 135 Rspec clone. Same driver and board as the HLG so MAYBE as much as 150W actual draw from the wall even though the driver is a 120.