grow box temp

420kid · #1 (**permalink**) 10-19-2002, 10:03 PM

I have read that marijuana plants need 70-80 temp range to grow properly but i have one 12" flourescent light in my box and it isnt doing to mch temp wise i say its about 60*f at most. what can i do to warm the box a little. If the temp is low inside the box do i still need a fan in there.

weedhead137 · #2 (**permalink**) 03-14-2006, 11:15 PM

put more lights in it or keep it in a warmer place i dont think u need the fans if the temp is 60

newgrow · #3 (**permalink**) 03-14-2006, 11:21 PM

yo floros dont give off heat i had the same situation and i went out and bought a heater fan it is kinda like a blow dryer but 10" that helped alot and once it gets warm you can turn off the heater and its just a fan its pretty cool

toastybiz · #4 (**permalink**) 03-15-2006, 05:36 AM

You need more light in any event, one 12" fluoro won't do much for light let alone heat. After you add more lights if you still have low temps you can add a small space heater or even add one or more regular incandescent bulbs. I know, blasphemy, but it's for heat only.

You will still want a fan to circulate air and to grow a strong stalk and branches.

ToKeNuGz · #5 (**permalink**) 03-15-2006, 09:13 AM

a 12" flouro is good enough for seedlings

you'll need much more wattage as the girl (hopefully) grows up

60 degrees is amazing... lower temps seem to bring out a darker, richer color of the plant (possibly a purple

) but if you really want to grow, get some CFLs (the twisty kind)... maybe 2-3 45 w... you wont get much bud but its the best kinda light for a small, new grow.

if you have the money, you could get a low wattage metal hallide or high pressure sodium bulb
they sell 60-90watt mh and hps bulbs at home depot, but you will need a ballast i think those are found at home depot also

hps is much better for flowering because it is more on the red spectrum whereas metal halide is best for vegetation on the blue spectrum

but once you get into bigger lights you run into heat problems... its a vicious cycle
make sure your temps stay below 80 degrees F

peace and stay blazed

Nugz

Dr. Dank · #6 (**permalink**) 03-15-2006, 09:14 PM

use more light and yes you still need a fan, keeping air circulating around the box is important and a fan blowing on the plants helps to strengthen the stems so that they wont break or fall over when they get big buds on them.

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#1 (permalink) 10-19-2002, 10:03 PM
420kid Registered User Join Date: Oct 2002 Posts: 18	grow box temp I have read that marijuana plants need 70-80 temp range to grow properly but i have one 12" flourescent light in my box and it isnt doing to mch temp wise i say its about 60*f at most. what can i do to warm the box a little. If the temp is low inside the box do i still need a fan in there.

#2 (permalink) 03-14-2006, 11:15 PM
weedhead137 Registered User Join Date: Mar 2006 Posts: 2	put more lights in it or keep it in a warmer place i dont think u need the fans if the temp is 60

#3 (permalink) 03-14-2006, 11:21 PM
newgrow Registered User Join Date: Jun 2004 Location: florida Posts: 306	yo floros dont give off heat i had the same situation and i went out and bought a heater fan it is kinda like a blow dryer but 10" that helped alot and once it gets warm you can turn off the heater and its just a fan its pretty cool

#4 (permalink) 03-15-2006, 05:36 AM
toastybiz keep it green Join Date: Mar 2006 Posts: 6,493	You need more light in any event, one 12" fluoro won't do much for light let alone heat. After you add more lights if you still have low temps you can add a small space heater or even add one or more regular incandescent bulbs. I know, blasphemy, but it's for heat only. You will still want a fan to circulate air and to grow a strong stalk and branches. __________________ toastybiz Grandpa's grow guide ~ Vokal's grow guide ~ Diagnosing problems ~ Purilite's basic light guide Germination ~ Sid's do's and dont's ~ Buying seeds online head-to-head test Glossary of grow terminology ~ unoit's bubble hash method ~ Another hash method GC Forum Rules ~ NORML: MJ and the law

#5 (permalink) 03-15-2006, 09:13 AM
ToKeNuGz Registered User Join Date: Mar 2006 Posts: 53	a 12" flouro is good enough for seedlings you'll need much more wattage as the girl (hopefully) grows up 60 degrees is amazing... lower temps seem to bring out a darker, richer color of the plant (possibly a purple) but if you really want to grow, get some CFLs (the twisty kind)... maybe 2-3 45 w... you wont get much bud but its the best kinda light for a small, new grow. if you have the money, you could get a low wattage metal hallide or high pressure sodium bulb they sell 60-90watt mh and hps bulbs at home depot, but you will need a ballast i think those are found at home depot also hps is much better for flowering because it is more on the red spectrum whereas metal halide is best for vegetation on the blue spectrum but once you get into bigger lights you run into heat problems... its a vicious cycle make sure your temps stay below 80 degrees F peace and stay blazed Nugz Last edited by ToKeNuGz; 03-15-2006 at 09:19 AM.

#6 (permalink) 03-15-2006, 09:14 PM
Dr. Dank Registered User Join Date: Feb 2006 Posts: 148	use more light and yes you still need a fan, keeping air circulating around the box is important and a fan blowing on the plants helps to strengthen the stems so that they wont break or fall over when they get big buds on them.

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