New Grow Tent Temp Issue

thejasper01

thejasper01

Member
Hey guys! Just starting out and tent setup looks great. Only issue is my Humidity sits right around 80% and the temp is always around 67 F. Question is, would an Hps bulb added to the room bring it up 10 degrees ish and possibly zap some of that moisture? Just didn't think adding a space heater to fix that was appropriate. Tent is a 48x36x72 and using 2 75w Roleadro Full spectrum LEDs. Any thoughts for this newbie would be appreciated!
 
thejasper01

thejasper01

Member
CaliRootz88 said:
You can raise the temps which will also drop some humidity. Don’t be afraid of higher humidity as long as your VPD is in check accompanied by air flow and air exchange.
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Do you think that adding the hps light would raise the temp enough? Maybe a dimmable one so I can find a sweet spot?
 
HydroKid239

HydroKid239

Well-Known Member
thejasper01 said:
Hey guys! Just starting out and tent setup looks great. Only issue is my Humidity sits right around 80% and the temp is always around 67 F. Question is, would an Hps bulb added to the room bring it up 10 degrees ish and possibly zap some of that moisture? Just didn't think adding a space heater to fix that was appropriate. Tent is a 48x36x72 and using 2 75w Roleadro Full spectrum LEDs. Any thoughts for this newbie would be appreciated!
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A small space heater blowing at a passive intake vent, with an extraction fan removing air from the top should help pull the heat in. Space heater's pump out dry heat. It should help.
Are you in veg?
How many watts is the HPS bulb? In Flower maybe consider swapping out those 75w lights for the HPS for flower.
 
Thodoph

Thodoph

Well-Known Member
I unzip my tent about 6 inches at the top. My temp runs 77 to84 and the RH is 45 to 65. Works for me.
My lights are 2x tf1200 FAMURS one in each tent 32x32x63.
 
FirstCavApache64

FirstCavApache64

Well-Known Member
It's hard to understand why the humidity is so high with that big of an extraction unit unless you're in a really cold damp place which I guess you are. You really do need more light. You have 12 square feet and only 150 watts. You'd like to have around 35-50 watts per square foot. You have 12.5 which is going to really limit what you can do. Using 30 watts per sq ft as a bare minimum for flower you need 360 true watts of power to light that much space and adding it would generate more heat just by virtue of it running. Check out the best deals thread for budget lights if cost is an issue, they have some great deals on Chinese LEDs that guys have been having good luck with for a budget solution to get you started with.
 
thejasper01

thejasper01

Member
FirstCavApache64 said:
It's hard to understand why the humidity is so high with that big of an extraction unit unless you're in a really cold damp place which I guess you are. You really do need more light. You have 12 square feet and only 150 watts. You'd like to have around 35-50 watts per square foot. You have 12.5 which is going to really limit what you can do. Using 30 watts per sq ft as a bare minimum for flower you need 360 true watts of power to light that much space and adding it would generate more heat just by virtue of it running. Check out the best deals thread for budget lights if cost is an issue, they have some great deals on Chinese LEDs that guys have been having good luck with for a budget solution to get you started with.
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Yeah you actually nailed it, it’s in a basement somewhat close to a furnace with the ac always running. I figured since I only had a couple plants the lighting was enough, but sounds like I need to up that!
 
FirstCavApache64

FirstCavApache64

Well-Known Member
We work with what we got. You'll learn to adapt the environment and dial it in. You're doing all the right things and trying to fix it at the right time, before it's full of buds. Good luck with the extra lights and hope they grow into big girls for you.
 
HydroKid239

HydroKid239

Well-Known Member
thejasper01 said:
Yeah you actually nailed it, it’s in a basement somewhat close to a furnace with the ac always running. I figured since I only had a couple plants the lighting was enough, but sounds like I need to up that!
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Sounds like a nice spot. Way better once you fill that space with proper lighting as @FirstCavApache64 mentioned.
You should have no issues in veg, maybe need a dehumidifier for flower to bring that RH down.
I have to run an AC in the room with 480w running at 100% to keep temps under 78F. I keep passive vents open & run my 6" extraction fan at 75% power. Humidity sits in the 45-55% range.
 
thejasper01

thejasper01

Member
HydroKid239 said:
Sounds like a nice spot. Way better once you fill that space with proper lighting as @FirstCavApache64 mentioned.
You should have no issues in veg, maybe need a dehumidifier for flower to bring that RH down.
I have to run an AC in the room with 480w running at 100% to keep temps under 78F. I keep passive vents open & run my 6" extraction fan at 75% power. Humidity sits in the 45-55% range.
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Veg I am! Very early on though. Like a dope I didn't keep track of when these first two started, so I can't say which week (but I do have a rough idea lol). Sounds like better lighting might be key to success here with the dehumidifier on backup. I do also like the other fellows idea of putting a space heater outside an intake, not bad also. Thank you guys!
 
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