Also I don't know how far your light is away from the temp gage, but it can be raised higher during veg compared to flowering. So you can get away with waiting a month or so while they veg to get your temps figured out. This is all if your lights are close as of now. When I was vegging with my 600 I was keeping it 30in away from the plants, during flower 15-20inch. This is all from experience though. Every situation is different.