Hey, I have two girls growing beautifully for 1 month and 1 week. The question is should I flower at 400 watts or 600 watts? (Basic Grow Information) Strains: Bubba Kush - Heat Sensitive (Like For Serious) lol, Semi Pest Resistant, Easily Over/Under Watered, Slow Grow Special Kush - High/Low Temperature Resistance, Pest Resistance, Fast Grower Setup: Tent: Secret Jardin DR60II Grow Tent (2x2x5) Grow System: IPower 400 Watt Dimmable Ballast (ON) SunLeaves 600 Watt Ballast (OFF) IPower 600 Watt Bulb (OFF) IPower 400 Watt Hps Bulb IPower 400 Watt MH Bulb VenTech Inlet/Outlet Fan 240CFM (x2) VenTech Fan Speed Controller Growing Container: 5 Gallon Smart Pot Basic Soil Grow: Fox Farm Ocean Forest Perlite Dolomite Damascus Earth
I'm a noob but here is my information, maybe it will help you. My room is 3 x 10 x 8h and I have 3 plants under a 400 watt light. The normal room temp is about 60 degrees. When I have my light on the plants are in the low 80's. My fan is about 350 cfm. All that said I would go with the 400 for your tent size. If possible set it up before hand and see what the temps are for the 600 if you have it already. Then you know for sure.
You mention one of the plants is heat sensitive. It's a relatively small space, you wont be able to move the light as high as you need if the plants aren't mega short. I suggest you stick to the 400 tbh, there's less risk.
Get a cool tube or an air cooled reflector for the 600w. I dont see why you are having heat issues already with the inline fan for ventilation... Is your thermometer in direct light or a shaded area? Sent from my SPH-L710 using Tapatalk