Broad mites/cyclamen mites or maybe heat stress?

D

dendroaspis

Active Member
Hi guys,

My plants are showing some curly/cupping leaves. I’m thinking mites.
Hoping it might be the heat. It was around 88 past couple days.
What do you guys think? Or am I completely off?

stats:


83-85 fahrenheit
55-65 humidity
RDWC
Ec ~1.0
Ph was crashing the past days. I have done a res change. Currently sitting at 6.2.

Plants where sleeping when the photo’s where taken.

7ED82EA7-C9BD-424F-BD2A-18F925B72849.jpeg96D6C61A-DB1A-4DCD-A73A-D92F3FD6F186.jpegE8FA3D0D-A029-491F-9B79-26B5B02E7A85.jpeg
 
Last edited:
Draig

Draig

Active Member
It looks like heat stress to me. Invest in a jewelers loupe or pocket microscope etc. to check for mites, it will also help when it's time to decide when to harvest to check the trichomes. Good luck.
 
D

dendroaspis

Active Member
Draig said:
It looks like heat stress to me. Invest in a jewelers loupe or pocket microscope etc. to check for mites, it will also help when it's time to decide when to harvest to check the trichomes. Good luck.
Click to expand...
Thanks for weiging in. I own a pocket microscope. Cant see any mites, but these ones are susposed to be really hard to see.
 
D

dendroaspis

Active Member
Billy the Mountain said:
If using LED lights, 83-85 air temp is just about perfect.
Leaf temps will be 3-5 degrees cooler due to transpiration.
Click to expand...
You think the 88 might have caused this? Or is that safe range?

I do have airconditioning in the room, but if u close the windows, that will decrease my co2 way to fast..
 
Billy the Mountain

Billy the Mountain

Well-Known Member
Unless your grow room is completely sealed, I'd be a lot more concerned with controlling the temp rather than worrying about CO2 levels.
Leaves look like pH issue from my experience
Has situation improved since u posted pic and changed res?
 
Draig

Draig

Active Member
Billy the Mountain said:
If using LED lights, 83-85 air temp is just about perfect.
Leaf temps will be 3-5 degrees cooler due to transpiration.
Click to expand...
Right! Recovering from a stroke lol.. I reread and noticed he had his light off I was assuming the temps from an HID could be too close and hotter than the ambient temps. I should have asked more questions.
 
D

dendroaspis

Active Member
Billy the Mountain said:
Unless your grow room is completely sealed, I'd be a lot more concerned with controlling the temp rather than worrying about CO2 levels.
Leaves look like pH issue from my experience
Has situation improved since u posted pic and changed res?
Click to expand...
The res change still gave some PH problems, but after adjusting (raised to 1.2) the EC, it has been more stable. I.e. only dropping 0.3 in 24 hours.

The plants seem to be happier now. Less twisting and cupping.

Thanks for your help. Has been very usefull.
 
D

dendroaspis

Active Member
Draig said:
Right! Recovering from a stroke lol.. I reread and noticed he had his light off I was assuming the temps from an HID could be too close and hotter than the ambient temps. I should have asked more questions.
Click to expand...
I should have mentioned I use QB led’s
 
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