Need help identifying issue with my plants

K

Kola_Kreator

Well-Known Member
DanKiller said:
RH and Temp must be intertwined, if you set your RH to 30 you need to set the temp to 22-24c in order to keep transpiration rate optimum for that setting.
This is experience and nature, the best weed in the world is in places that has these climates.
The cold dry days and night in late flower in the Indian mountains for instance.
The 22-25c temp and 30RH will give you best quality if applied at the right time.
Not talking about yield or density.



Again my friend, get out of the charts and start looking what is best in the real world, each temp has the best rh setting for it but no one is saying in which to grow what, it's only references.
So, if you know anything, you know that optimum conditions are 30-32c with rh of 80 at least.
This is backed by science, not advice, look it up.
This is mainly for flower yes !
Where on earth you see people flower outdoor in 20c ?? Is flower started to happen on winter or something ?
Flowering is a spring/summer event, and as such it goes with heat and humidity yes to your surprise...
So again, if you can maintain a 30c with 70-80rh your golden for a massive yield, growth, etc.
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You are very wrong my friend. If your humidity is 80% the plant can't move the water + nutrients from the roots and out through the leaves. With RH that high there's not enough room in the air for more moisture and the plants transpiration rate slows right down. The reason why people target the optimal Vapour Pressure Deficit is because you are controlling how fast the plant transpires which then in turn regulates how much the plant is feeding.
 
DanKiller

DanKiller

Well-Known Member
pegboy said:
Any pics of your entire grow?

And if you don't mind pointing me in the direction of this information that is saying that that is the optimum temperature and humidity.

Edit. And I still maintain that growing with that heat and that humidity is way too risky for powdery mildew and possible bud rot.
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I agree, when you want to be at the highest level of growth the risks are high aswell no one said it wasn't.
When you grow in 31c you only have 2-3 degrees before shit gets ugly, so your def close to the limit but don't mean it's not worth it if you want to.
This info is old news, science backs up these claims, the rain forest in the Amazon back up these claims, jamaica also.
I can find the science papers if you insist and you can too with an easy search.
 
DanKiller

DanKiller

Well-Known Member
Kola_Kreator said:
You are very wrong my friend. If your humidity is 80% the plant can't move the water + nutrients from the roots and out through the leaves. With RH that high there's not enough room in the air for more moisture and the plants transpiration rate slows right down. The reason why people target the optimal Vapour Pressure Deficit is because you are controlling how fast the plant transpires which then in turn regulates how much the plant is feeding.
Click to expand...
Only when your temps are below 26c, 80 RH is problem.
When you adjust to 30-32c the plant is transpiring at the highest rate, from the roots and from the air.
You have a nose right ? But did you know your whole body breath ? Weird shit, but nature is like us, if heat drives metabolism, humidity helps coupe with exhausting too much.
You want high heat, with high drive to metabolise, but you want to offset this rate with a good amount of water in the air.
 
K

Kola_Kreator

Well-Known Member
DanKiller said:
Only when your temps are below 26c, 80 RH is problem.
When you adjust to 30-32c the plant is transpiring at the highest rate, from the roots and from the air.
You have a nose right ? But did you know your whole body breath ? Weird shit, but nature is like us, if heat drives metabolism, humidity helps coupe with exhausting too much.
You want high heat, with high drive to metabolise, but you want to offset this rate with a good amount of water in the air.
Click to expand...
Whatever you are rambling about has no foundation in plant science.

Also you hijacked this guy's thread and took it completely off topic which is against the rules of the forum.

Op if you are still following you have a mag deficiency just like @amneziaHaze said earlier. You are treating your Coco like soil and that's a big part of the problem. Water at least 6 times per day to run off at 1.4 EC and 5.8 pH and you will solve your problem. The reason you are seeing a mag def is because your letting the Coco dry out too much.
 
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