How are you cooling your grow space???

Sup guys I’m having a problem with cooling my small 2x2 grow space.. My light isn’t that hot. But my room temps are always 76-79 degrees F. So when my lights come on of course it’s gone spike +5 degrees no matter what light I have. It’s has to be a way to cool my space without a big ac unit. I could draw air in from outside but I don’t want ducting out window. Plus that would only work for cool days never in the summer.. any ideas?? Thanks

84°F (28.8°C) is not a problem at all, especially when using LEDs. I've grown successfully indoors with temps as high as 32°C. Also have grown outdoors with temps reaching 40°C during the day and still had very few issues. Do you have an exhaust fan above your light? And do you have fans inside the tent?

Yea I have fans and exhaust fan... I figured they’d be cool with temps in the 80’s it just doesn’t sit right with me but I guess I’ll have to deal with it.. I’ll just make sure air circulation right and water often thanks

Dking93420 said:

Yea I have fans and exhaust fan... I figured they’d be cool with temps in the 80’s it just doesn’t sit right with me but I guess I’ll have to deal with it.. I’ll just make sure air circulation right and water often thanks

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"When a leaf absorbs IR, it heats the leaf creating actual leaf temperatures of 5-7 degrees higher than the 78F degree air temperature. Thus with light sources rich in IR, an air temp of 78F is functionally 83F-85F to the plants metabolism. LED’s emit no/littlr IR, so to achieve similar metabolic rates found in HID or greenhouse conditions at 78F air temp,LED growers need to run the room air temp at 83F-85F."

Is that a sf-2000 try dimming ya light and dropping it down to get the same par just closer to the can. Next mount the driver outside of the cab, not if you can with the sf-2000 may require home modding our get a qualified sparky to do it. I would look for strains that can handle heat but 32cel is fine it’s only really autos that won’t like it when young 30 is my max indoor auto but yer it’s not going to be optimal. Can you duct coil air in from somewhere else? A small portable ac but the space is to small to duct straight in and is just a waste of power. How’s your rh level maybe a small evaporated portable ac ducted in running ‍ n low would push rh up though but cheap to run, cheap to buy if rh is to high it will cause mold. If you had it running low enough and you’re ex fan pulling more out you could let some air in externally vai it been in a vacuum to help rh level.

yeah i touch 32c at the very top of my limit in a large prop, they are fed with fresh and ambient air and I even get some c02 in there as the temps being high work with that. Cooling for me on a hot day is having some good usb fans on (firing upwards up the plants) as well as the fresh air coursing through, that's my 'cooling' on full.

.....been having some hotter temps here so I managed to lower the air intake hole (on top of static home) to now draw fresh air from underneath the home and i've lost 3 celcius just coming down about 8ft with my air intake hole. Running a grow in a propogator i was getting highs (over 32) so had to do something, now my house limit is about 29.5. Really glad I lowered the intake height or I would have struggled to stay in the safe(ish) zone. Hope that might help anyone wanting to shave 2 or 3c off if they can lower their 'fresh air in' height substantially.