i am currently growing in a grow tent and was wondering where i should take the temperature from. i have one beside the plants which read 29/30 o C and one above the light which reads 25oC. i have a 125 extractor fan which does 256 square feet a hour and i have a fan on speed 2. is this ok temperatures or is there something wrong? i was told the top temperature above the light is the one you should check and go by. the guy at the hydrophonics shop told me that. so what does everyone think?