heat!

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sullchong

Member
is 87 - 88f too hot i just cant get the temp down i have a canfan125l with filter, the tent sides are sucking in............. I have a dr100 with 400w set up. any1 know anything to ruduce heat.
 
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tellno1

Well-Known Member
i had temp probs in my tent too .. i use a 400w and it is a dr90II .. i had to seperately cool the light ..
 
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sullchong

Member
no i dont have a cool tube i was going to buy 1 but just got the normal reflector becuase i thought it wouldnt give off as much light
 
trichromalicious

trichromalicious

Active Member
How are you reading your temps? IR thermometers will give you a better number. Normal thermos will heat up a little when placed under the light because they can absorb heat. 88 is pretty hot an not ideal for growth. Some strains might suffer while others will be fine. You want to keep it below 90f for sure. Do you have an oscillating fan? Take the base off one and hang it upside down just above your light. It will spin around and circulate air for your plants.

I have a 400w with 2 supplemental lights in my flower cab and the temps are around 80f using 3 fans (2 6" inline and 1 oscillating). The tubes running to/from the cool-tube are split to create more circulation in the chamber. The intake inline fan sucks air from the ground outside the chamber and blows air horizontally below the cool-tube and into the grow chamber near the plant tops. The exhaust inline fan sucks hot air out of the top of the cab (via a duct leading from the roof to the intake side of the cool-tube) and then sucks the air through the cool-tube. Next there is another 4' length of duct (dont put the exhaust fan right by the cool-tube it will overheat) then the inline exhaust fan followed by another 5' duct and then the air is exhausted out the cab by the top. The oscillating fan is hung upside down by the base right above the HPS and oscillates.
 
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sullchong

Member
yeah i have a oscaillating fan....... i think im going to have to get a cool tube...... and whats the max plants you would recommend to put in a dr100???
 
trichromalicious

trichromalicious

Active Member
It took me a week of trial an error playing with the fan and reading temps to figure out that setup. I run the light during the night time so that my temperature range is much tighter (this produces tighter buds). My temps range from 70-80F I am hoping for some actual purple purple kush and blue blueberry (colors develop with lower temps).
 
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tellno1

Well-Known Member
sullchong said:
yeah i have a oscaillating fan....... i think im going to have to get a cool tube...... and whats the max plants you would recommend to put in a dr100???
Click to expand...
it depends on how bushy they are .. i have 4 in my dr90 3'x3' ... bushy little girls .. but i dont like the branches of 2 different plants touching either .. just me lol
 
trichromalicious

trichromalicious

Active Member
Yeah you need a cool-tube or cool-hood for sure. You can let your plants get closer to the light which increases growth. It depends on how big your plants get on how many you can fit. For typical I would say 6 in 5gal buckets.
 
zvuv

zvuv

Active Member
In my setup the cooling for the light is a separate line isolated from the grow space air. This way I dont have to draw air through the carbon filter to cool the lamp.

I have a 600W in a 5x3 closet 7' high. In the summer I need AC to control the temps
 
trichromalicious

trichromalicious

Active Member
zvuv said:
In my setup the cooling for the light is a separate line isolated from the grow space air. This way I dont have to draw air through the carbon filter to cool the lamp.

I have a 600W in a 5x3 closet 7' high. In the summer I need AC to control the temps
Click to expand...
I can understand that. I dont even run a carbon filter as I am not really concerned with smell.
 
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