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Just a quick light question

Tylerhonky

Tylerhonky

Member
I have a 36" 36" 72" tent with a 400w cool tube HPS light with 4 regular photo period plants and one fem auto I may only turn out to have like 3 plants total because the others are not fem so my odds are pro small anyways my plan is to veg my freebie seeds on a 18/6 while I grow out my auto then the day I harvest my auto I'm throwing the photos on 12/12 my question is can I do my entire grow with my ballest at 50%-75%TOPS if I run it at 100% my tent just gets wayyyy too hot I'm keeping it at 73-77 when I have it at 50% and 79-81 at 75% and that's borderline with a 4" intake fan +A/C in the window right beside it keeping a small room cold
 
$bkbbudz$

$bkbbudz$

Well-Known Member
Tylerhonky said:
I have a 36" 36" 72" tent with an attached to the ca 400w cool tube HPS light with 4 regular photo period plants and one fem auto I may only turn out to have like 3 plants total because the others are not fem so my odds are pro small anyways my plan is to veg my freebie seeds on a 18/6 while I grow out my auto then the day I harvest my auto I'm throwing the photos on 12/12 my question is can I do my entire grow with my ballest at 50%-75%TOPS if I run it at 100% my tent just gets wayyyy too hot I'm keeping it at 73-77 when I have it at 50% and 79-81 at 75% and that's borderline with a 4" intake fan +A/C in the window right beside it keeping a small room cold
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Do you have ducting and a fan attached to the cool tube?
 
Richard Drysift

Richard Drysift

Well-Known Member
You need a vented exhaust to run that 400w HPS or it's gonna be hot in that tent. Also you cannot run that at lower than 100% in flower or you'll have a crappy yield. Invest in a vented exhaust- a can fan will be fine & I would suggest hooking that to a filter to kill the smell. Then you'll have a solid setup that will produce for you. Keep your temps around 75 if you can- plus I think you are gonna have issue with trying to grow autos alongside reg photo plants - consider adding another grow area and/or vegging under t5 which may not even need venting
 
$bkbbudz$

$bkbbudz$

Well-Known Member
HMMM.I have a smaller tent with 400w HID and a 220cfm can fan blowing through the cool tube...temp never goes above 80 degrees.

Anyway Drysift said it better.
 
$bkbbudz$

$bkbbudz$

Well-Known Member
I have a separate set up for odor control. I have a 440 cfm inline fan sucking air out of my tent and pushing it through the filter. You can see the whole set up in my journal ...link in my signature.
 
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