heat

[ttystikk]

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.

THIS. Nuff said.

 

[superloud]

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.

Ok thank you

 

[superloud]

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.

Thanks for the info

 

[superloud]

I will move my thermometer. and see what it reads my lights are still out for another hr

 

[SPLFreak808]

Ok thank you

YW. Think of it this way bro, it is only 80f outdoors where i live. The sun can heat a car up to 115f! But i can still breath 80f air!

 

[wwrockyou]

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.

That's funny "place a fan near the flour"
when I was little and they had instant coffee and it was very fine consistency, he told me to blow into the jar. I learned my lesson early.

 

[OG Gardenz]

you are right about the optimal being around 85.... but this is only if all factors are perfect, ie light, co2 and nutrients... thus keeping it on the safe side down around 78-79...

 

[superloud]

YW. Think of it this way bro, it is only 80f outdoors where i live. The sun can heat a car up to 115f! But i can still breath 80f air!

I guess that makes sense

 

[qwizoking]

No it doesnt...

 

[superloud]

No it doesnt...

No what dosent?

 

[qwizoking]

The air is 80- your breathing air thats 80..paint on car is +130...

The paint on the car is what your trying to keep cool, doesnt matter what the air temp is if the plant absorbs enough radiation (light heat etc) that its hotter than optimal.
This is why you use an ir temp gun to read your plants at canopy.
Besides, if you have enough air flow and water at the roots, transpiration and evaporative cooling will keep your plants healthy into the 90's

 

[superloud]

Is this caused by heat That leaves just looks really weird The tips are turning black and curling down a little bit While the edges are canoeing up.

 

[SPLFreak808]

No it doesnt...

Sorry, i thought he was complaining about ambient temp, not canopy temp. Regardless, that thermometer reading is useless with the lights on as the plant is able to cool itself the thermometer not so much.

 

[SPLFreak808]

The air is 80- your breathing air thats 80..paint on car is +130...

The paint on the car is what your trying to keep cool, doesnt matter what the air temp is if the plant absorbs enough radiation (light heat etc) that its hotter than optimal.
This is why you use an ir temp gun to read your plants at canopy.
Besides, if you have enough air flow and water at the roots, transpiration and evaporative cooling will keep your plants healthy into the 90's

The point im trying to make is dont use the car (thermometer) to get a weather report when left in the sun!

 

[superloud]

Well my lights have been on two hpurs i have one sitting on the sink behind the fan and one hanging on the rim of pot

 

[SPLFreak808]

Well my lights have been on two hpurs i have one sitting on the sink behind the fan and one hanging on the rim of potView attachment 3442999 View attachment 3443000

Put one by an intake about 15" in front of it to check the intake temps. Do you have a fan blowing over the canopy? Also what is the RH outside the grow room compared to inside?

 

[ttystikk]

That's funny "place a fan near the flour"
when I was little and they had instant coffee and it was very fine consistency, he told me to blow into the jar. I learned my lesson early.

Gotta love Swype...

 

[240sxing]

Alot of good suggestions on here , 1 thing I notice is the number of fans you have blowing which is just moving your hot air , I understand by the looks of it a little tight fit your better off not trying to vent out where you are and keep your ducting one size and short real simple no sharp angles , also point couples fans straight down , pushing cold air up.

Hope it helps , been there done that.

 

[superloud]

Put one by an intake about 15" in front of it to check the intake temps. Do you have a fan blowing over the canopy? Also what is the RH outside the grow room compared to inside?

My intake is Basically on the floor So if I put a thermometer there it would be reading my floor temperatures. I will put one of my readers outside the room and see what it is. I think my problem might be I have my tent outside of my grow room Ventilating straight into The room that my grow room is pulling its intake from.

 

[superloud]

Alot of good suggestions on here , 1 thing I notice is the number of fans you have blowing which is just moving your hot air , I understand by the looks of it a little tight fit your better off not trying to vent out where you are and keep your ducting one size and short real simple no sharp angles , also point couples fans straight down , pushing cold air up.

Hope it helps , been there done that.

Well I can't change my Ventilation setup The only other place I can have it been delighting to is just right outside of my grow room. Then my intake would be sucking in 90 degree air