Temperature Question

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siin82

Well-Known Member
I have an indoor grow in a stealth box. The temperature range in the room is 95-60 (high-low). I have an air conditioner that pumps cold air into my box, not directly - there are two walls: One outer, one inner; air blows through outer wall at the top, then enters the box through the inner wall at the bottom. I have a similar setup for outtake air - computer fans blowing out the top of the inner wall, venting through hole at the bottom of the outer wall. Box is 41x19x30 (WxDxH).

My temperatures in the box are approximately 73-63. No matter what temp I set the air condition to, the temps in the box don't change.

My question: Is the high temp too low?

Just switched my lights after 3 weeks of veg running SCROG. Plants are doing amazingly well, so maybe I have no cause for concern. Just wondering.

Btw, I'm not a growing noob, but this is a new box and I've done a good job on construction (if I don't say so myself). The conditions are definitely better than they've been in past grows. I've never been able to keep high temps under 90 in the past in summer (with a similar setup).

More (maybe insignificant) facts: I have 4 Blue Dreams, 4 Black Lime Reserve, 4 Cherry Pie and I'm using a combination of CFLs and LEDs (12 total lights ranging from 75-300 watts, 1950 total watts - lots of light).

Thanks in advance for replying.
 
Last edited:
BMWEATER

BMWEATER

Well-Known Member
siin82 said:
I have an indoor grow in a stealth box. The temperature range in the room is 95-60 (high-low). I have an air conditioner that pumps cold air into my box, not directly - there are two walls: One outer, one inner; air blows through outer wall at the top, then enters the box through the inner wall at the bottom. I have a similar setup for outtake air - computer fans blowing out the top of the inner wall, venting through hole at the bottom of the outer wall. Box is 41x19x30 (WxDxH).

My temperatures in the box are approximately 73-63. No matter what temp I set the air condition to, the temps in the box don't change.

My question: Is the high temp too low?

Just switched my lights after 3 weeks of veg running SCROG. Plants are doing amazingly well, so maybe I have no cause for concern. Just wondering.

Btw, I'm not a growing noob, but this is a new box and I've done a good job on construction (if I don't say so myself). The conditions are definitely better than they've been in past grows. I've never been able to keep high temps under 90 in the past in summer (with a similar setup).

More (maybe insignificant) facts: I have 4 Blue Dreams, 4 Black Lime Reserve, 4 Cherry Pie and I'm using a combination of CFLs and LEDs (12 total lights ranging from 75-300 watts, 1950 total watts - lots of light).

Thanks in advance for replying.
Click to expand...

Unless your growing purple strains I would think that's too low. Anything below 75 and I notice they just don't grow as fast. 77 for seems to the the sweet spot. But every grower is different. Has the growth been slower than your previous grows? If not maybe your fine and I would wing it but add a seed heat mat for the roots
 
Johnei

Johnei

Well-Known Member
No matter what you set the ac to, temps dont change.. how is this possible? there is a design flaw.
 
S

siin82

Well-Known Member
BMWEATER said:
Unless your growing purple strains I would think that's too low. Anything below 75 and I notice they just don't grow as fast. 77 for seems to the the sweet spot. But every grower is different. Has the growth been slower than your previous grows? If not maybe your fine and I would wing it but add a seed heat mat for the roots
Click to expand...
Growth is actually totally fine. It's my first time SCROG so it's hard to gage, but the plants are VERY healthy.
 
S

siin82

Well-Known Member
Johnei said:
No matter what you set the ac to, temps dont change.. how is this possible? there is a design flaw.
Click to expand...
So, the reason for this (I believe) is because the temp outside the box is so much hotter than inside, the AC never shuts off. Even if I set the temp to 80 on the AC, the room never cools below 80 (not until after dark, that is). The result is the AC is constantly blowing cold air in the box. Air flow both in and out of the box is quite good. In fact, I think because it's so good (and the AC isn't shutting off) is why the temps are so low.
 
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