MichiganMedGrower
Well-Known Member
I added a 2 tube to the 8 tube in that 3x3 a while ago. All 6500k. And it still stays fine with both passive vents open and the 4" fan.My old 2x4 ran the same light but 4 bulbs with the 6500 K and it was perfect because not too much heat and I could get super close to the canopy. Only change I would make is that depending on the ambient temps year round where he lives. Where I use to live 8 bulb would have been too much, where I am now I would most likely be able to pull off the 8 tuber.
But I do maintain a 72 degree or under ambient temperature in the house and room that the tent is in.