heat

[superloud]

I have a 256 cubic foot room With a thousand watt high pressure sodium set to 600 watts I have two big stand up fans on the plants and a 6 in 440cfm extraction fan. My temperatures are staying in the low to high 90s

 

[OG Gardenz]

thats to hot... should try to never go above 85 deg... photosynthesis slows down dramatically! 78-79 is my magic number

when your extractor fan kicks on where is it drawing air from?

 

[superloud]

Here is my ventilation setup. This is a picture of the tube going from light to fan. and from the fan to door.

 

[superloud]

thats to hot... should try to never go above 85 deg... photosynthesis slows down dramatically! 78-79 is my magic number

when your extractor fan kicks on where is it drawing air from?

I just posted all the pictures

 

[OG Gardenz]

so is the other end of your hood open?

 

[superloud]

Here is my fan set up. My to stand up fans. I just put this little stand up fan on top of my light today hoping to start moving some air around above the light To try to get the overall temperature down a little.

 

[superloud]

so is the other end of your hood open?

Yes

 

[SPLFreak808]

Keep the entire exhaust pipe the same diameter all the way through, if you have to put a reducer at the hood not the ceiling. Where is the thermometer placed? Are you using lights at night?

 

[superloud]

Keep the entire exhaust pipe the same diameter all the way through, if you have to put a reducer at the hood not the ceiling. Where is the thermometer placed? Are you using lights at night?

Yes I am using lights at night. And I had to use a reducer I could not cut a bigger hole into the Ceiling and I have a 6 inch fan but all that would fit up there the whole that was there was a 4 inch

 

[superloud]

Any other suggestions Appreciated

 

[superloud]

Keep the entire exhaust pipe the same diameter all the way through, if you have to put a reducer at the hood not the ceiling. Where is the thermometer placed? Are you using lights at night?

Here is a picture of where my Thermometers are I have two of them I just bought the one hanging in the front today

 

[SPLFreak808]

Here is a picture of where my Thermometers are I have two of them I just bought the one hanging in the front todayView attachment 3442541 View attachment 3442542 View attachment 3442541 View attachment 3442542 View attachment 3442543

Take the thermometer out of the light! Shade it from the top to get an actual reading. You want the air temperature of the room not the temp of the canopy.

 

[superloud]

Take the thermometer out of the light! Shade it from the top to get an actual reading. You want the air temperature of the room not the temp of the canopy.[/QUOT so sit it om top of light maybe?

 

[superloud]

Take the thermometer out of the light! Shade it from the top to get an actual reading. You want the air temperature of the room not the temp of the canopy.

I always read that it's best to suspended in the canopy

 

[superloud]

Any other suggestions on lowering my heat

 

[qwizoking]

Whats the temp of the air coming in?
Its coming from where?, and flowing with those 2, 16" fans or whatever?

You should have that reducer right at the ceiling for netter flow if yiu have to have it. Whats that black fan in that one last pic?
You just have the 1 inline fan?

 

[superloud]

Ok idk what the temp is coming in. the little black fan is the one blowing air into the room.

Whats the temp of the air coming in?
Its coming from where?, and flowing with those 2, 16" fans or whatever?

You should have that reducer right at the ceiling for netter flow if yiu have to have it. Whats that black fan in that one last pic?
You just have the 1 inline fan?

 

[SPLFreak808]

I always read that it's best to suspended in the canopy

But you are trying to cool down the room not the tops. If you're tops have heat burn/light bleaching then back off the lights, but it wont bring the room temp down. If the actual room temp gets over 90f then you will have retarded slow growth. My thermometer in the light hits 98f while its really only 80f.

 

[ttystikk]

thats to hot... should try to never go above 85 deg... photosynthesis slows down dramatically! 78-79 is my magic number

when your extractor fan kicks on where is it drawing air from?

Not exactly;


Optimal temperature is near 30C = 86F. Optimal in this case means the temperature at which plants grow fastest. Things do deteriorate rapidly above this figure, however, so staying to the low side is a reasonable precaution.

I'd also drop temps into the seventies for the last week of bloom to help frost production.

 

[ttystikk]

Here is a picture of where my Thermometers are I have two of them I just bought the one hanging in the front todayView attachment 3442541 View attachment 3442542 View attachment 3442541 View attachment 3442542 View attachment 3442543

LOL that's a thermometer, not a trapeze artist! Put that thing down at soil level where it belongs! If you're concerned about temperature stratification (hot air trapped at the top of the room, cool air at the bottom) then place a fan near the flour, aimed straight up. This is a good idea for better air circulation anyway.