Get your humidity dialed in with those temps and you'll be farting through silk.
What rh should go with those temps?
Farthing through silk
www.questclimate.com
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When I asked the question it did pop in my head I bet some smart ass will say well it depends and mention about C02 and higher tempsThe question is flawed but here goes excluding use of CO2 supplemented grows.
It has been shown in cannabis that the ideal leaf temperature for photosynthesis is 75f. This is the key room temps can vary greatly in order to achieve this leaf temp so if you really want to dial in on your temps then I suggest getting an IR temp gun.
Now also if your going to be shooting for the ideal leaf temps you may aswell take it a step further and use VPD to your advantage. Not the garbage online charts but true VPD that takes leaf temps into account. I can tell you it makes a decent difference in growth rates and plant health.
These are some links I think anyone who is going to use VPD must read to fully understand it because it's simply not as easy as picking a chart off the net and using it. If you do that you are likely to have issues.
The calculator is exactly what should be used.
Here they are:
Part 1
Vapor Pressure Deficit and Indoor Growing Part 1: What is VPD? - Quest Climate % Vapor Pressure Deficit and Indoor Growing Part 1: What is VPD?
Vapor Pressure Deficit (VPD) can help growers fine tune water flow through a plant. It acts as a "control dial" for cannabis cultivators.
Part 2
Vapor Pressure Deficit and Indoor Growing Part 2: Why is VPD Important? - Quest Climate
With proper VPD, just the right amount of water vapor will diffuse out of the humid interior into the atmosphere through the stomata.
Part 3
Vapor Pressure Deficit and Indoor Growing Part 3: Different Stages of VPD - Quest Climate
Written by Mike Steffes – Quest Dehumidifiers VPD Range Now that we’ve established the importance of transpiration and have some idea of how it happens, it should not be a stretch to accept that plant transpiration is driven by a vapor pressure difference of water: The partial pressure of water...
Haha awesome... My opinion is yes CO2 allows for high leaf temps but that doesn't mean it's more beneficial. I shoulda kept quiet on the CO2 from the get go lol... Hope it doesn't derail the convo
Amazon shit one are fine. Just important to read the directions and make sure it's set to surface temp.
The question is flawed but here goes excluding use of CO2 supplemented grows.
It has been shown in cannabis that the ideal leaf temperature for photosynthesis is 75f. This is the key room temps can vary greatly in order to achieve this leaf temp so if you really want to dial in on your temps then I suggest getting an IR temp gun.
Now also if your going to be shooting for the ideal leaf temps you may aswell take it a step further and use VPD to your advantage. Not the garbage online charts but true VPD that takes leaf temps into account. I can tell you it makes a decent difference in growth rates and plant health.
These are some links I think anyone who is going to use VPD must read to fully understand it because it's simply not as easy as picking a chart off the net and using it. If you do that you are likely to have issues.
The calculator is exactly what should be used.
Here they are:
Part 1
Vapor Pressure Deficit and Indoor Growing Part 1: What is VPD? - Quest Climate % Vapor Pressure Deficit and Indoor Growing Part 1: What is VPD?
Vapor Pressure Deficit (VPD) can help growers fine tune water flow through a plant. It acts as a "control dial" for cannabis cultivators.
Part 2
Vapor Pressure Deficit and Indoor Growing Part 2: Why is VPD Important? - Quest Climate
With proper VPD, just the right amount of water vapor will diffuse out of the humid interior into the atmosphere through the stomata.
Part 3
Vapor Pressure Deficit and Indoor Growing Part 3: Different Stages of VPD - Quest Climate
Written by Mike Steffes – Quest Dehumidifiers VPD Range Now that we’ve established the importance of transpiration and have some idea of how it happens, it should not be a stretch to accept that plant transpiration is driven by a vapor pressure difference of water: The partial pressure of water...
Snow already? U must way up there! Lmao it’s like almost 90 here!
Agreed... I know a lot of people feel like VPD is hokus pokus but that's because these dam charts floating around the net. They actually end up giving very high humidity recommendations when compared to the proper VPD calculations.
Growing outdoors here in southern Florida is not easy it can be done but our summers with temps as high as 110 and humidity levels that are they the roof ! This year we got what seemed like 100” of rain and the bugs ! There are multiple strains that tolerate this environment pretty well but it was so much easier to grow in Michigan ! Tough to get high quality smoke outdoors here in sunshine state! So I’ve switched to indoor farming!This is the extreme opposite of a question I answered a few hours ago.
There is no one best temperature. There are too many other variables to give it any sort of accurate number. Too many genetic and environmental variables have way more impact than the reading o a thermometer. Humidity, and air flow have more impact for example. There are also things like co2 levels, leaf temps, root temps and straight up the darkness of your leaves probably matter more.
People are scared to get their tents over 90. But in reality, people grow outside in California and Florida with 100+ temps for days. Co2 users like to be at least 90.
Then there is strain. Outdoor strains will generally take higher temperatures than indoor. There are exceptions of course.
If your intake temperature is cooler than your tent and you have adequate airflow, high temps dont matter so much. It's more about how fast the plant can shed the heat off, lower rh and high airflow.
That being said, I keep my tent as cool as I can get it. Lol. I start with room temperature because my house is climate controlled. 21c. My 315 CMH 3x3x6 peaks at 26c. My led veg tent peaks at 25c and my 1.5x1.5x3 with 7 x 100w dollar store led bulbs peaks at 26c.
Lights out, I'm not sure cause I dont look. But it cant be colder than my house at 21c.
I think reasonably, I can assume between 20c and 30c with the right amount of rh and airflow is my only real answer
