temp?

hey guys! my digital thermometer reads 90-95, but my handheld laser thermometer reads 75-80 directly on the plants... my handheld is a $300 snap-on laser thermometer, and the digital was $10 from wal-mart. any thoughts?

IDK but the digital one sounds like its reading the temp of the plants themselves maybe while the walmart one is actually reading air temps...75-80 at your plants canopy is right where u want it, 80-85 is okay but 90F+ is pushing it bigtime, do you see leaf cupping from heat stress?

they dont seem stressed at all... the 90 on the digital just scares me

so if the plants themselves are 75-80 its ok? even if the room is 90-95...

lets talk about fans, intakes and light reflectors. please describe each.

well, i have a 5x5x7 grow tent with a cool sun reflector (1000w mh) with a 6" 490 cfm wind tunnel cooling it... 4" intake and exhaust fans running for 1 minute every 45 min. 2 small 6" ciculating fans

how come the exhaust and intakes are timed? its important to get air in there unless you use co2.

i timed them to keep humidity up a lil...

Oh i see, did you take temp readings before you timed the fans? Im thinking you need them on all the time. i have a grow that stays at 88 degrees, so ive seen 90 degree temps before.

i started the grow on that air exchange cycle... scared to run the fans all the time. thought humidity had to be at about 60? as long as they dont look stressed im ok right? they are a good green color and perky...

You need to keep you exhaust on 24/7 to keep that light cool.

ok... just the exhaust on 24/7? run the intake 1min every 45min ok?