GiovanniJones
Well-Known Member
3.5 weeks into 12/12, I noticed that the middle of the new growth is turning light green on a couple plants. Is this a sign that the light is too strong and needs to be turned down a little? Thanks so much.
Should I Turn My Light Down
- Thread starter GiovanniJones
- Start date
TheSadBadGrower
Well-Known Member
How high from the plants and what kind of light?
GiovanniJones
Well-Known Member
The tallest ones are about 24” from the lights, the shorter ones are further.
it’s an Optic 8+ COB LED, 500W and currently @ 70% power.
Thanks.
it’s an Optic 8+ COB LED, 500W and currently @ 70% power.
Thanks.
TheSadBadGrower
Well-Known Member
Grab a magnifier and check the tops to see if you have any pests....
GiovanniJones
Well-Known Member
I have a 60-75X magnifier with LED lighting, and a really good 10X loupe.
I can see so much better with the loupe, every trichome is crystal clear, and the magnifier is kind of cheap.
Using both, I couldn't find even one sign of mites. Only a few plants are showing this and I spent close to an hour searching.
However, they had a good dose of earthworm compost tea last Wednesday, so four days have passed. I'm wondering if perhaps the tea may have been too potent and caused chlorosis by locking out some iron or zinc. Not sure, but even if the mites were a quarter the size of a trichome, I think I'd be able to see them.
Is it feasible that a compost tea can cause chlorosis, under certain conditions?
I can see so much better with the loupe, every trichome is crystal clear, and the magnifier is kind of cheap.
Using both, I couldn't find even one sign of mites. Only a few plants are showing this and I spent close to an hour searching.
However, they had a good dose of earthworm compost tea last Wednesday, so four days have passed. I'm wondering if perhaps the tea may have been too potent and caused chlorosis by locking out some iron or zinc. Not sure, but even if the mites were a quarter the size of a trichome, I think I'd be able to see them.
Is it feasible that a compost tea can cause chlorosis, under certain conditions?
kmog33
Well-Known Member
Look near the veins of your leaves on the back in the middle. Russets are really tiny and hard to spot. But that damage looks like bugs. And if it’s russets your in for some fun.
GiovanniJones
Well-Known Member
I pulled some affected-looking leaves off the plant, placed them flat on a table and scoped them for a while with both my magnifiers.
I didn't see anything again.
Maybe this could help me. Exactly how much more difficult would russet mites be to see compared to spider mites? That might give me a better idea of what to look for.
Thanks.
I didn't see anything again.
Maybe this could help me. Exactly how much more difficult would russet mites be to see compared to spider mites? That might give me a better idea of what to look for.
Thanks.
GiovanniJones
Well-Known Member
I've been at it for two hours checking leaves. Front, back, near the stem, top of plant, middle of plant, bottom of plant, etc.
Couldn't find a sign of any pest. If it helps, I can spot a spider mite in seconds.
What stress.
Here's a better pic. FWIW, this plant has been a bit of a mutant with very wrinkled leaves since germination.
Totally stressed out and clueless....
Couldn't find a sign of any pest. If it helps, I can spot a spider mite in seconds.
What stress.
Here's a better pic. FWIW, this plant has been a bit of a mutant with very wrinkled leaves since germination.
Totally stressed out and clueless....
kmog33
Well-Known Member
“The size of the russet mite is around . 0.2 mm”
Spider mites are more than 2x the size of russet
TheSadBadGrower
Well-Known Member
Out of curiosity....what are the plants planted in and what are you feeding them?
GiovanniJones
Well-Known Member
Yeah. As a test, I just set my digital calipers to 0.2 mm and the space between the measuring tips is crystal clear with my loupe. I feel like I'd be able to spot pests this size (not saying I'm right about this), but maybe I've just been having bad luck tonight.
I'm going to watch this plant closely day-to-day, see how it progresses and keep looking. I don't know if there's much more I can do.
TheSadBadGrower
Well-Known Member
Just looking over your journal....seems like you got everything down. Like you said...keep a close eye on it. Maybe quarantine her if you are able to for a few days to see how she does.
kmog33
Well-Known Member
If you have others around I would get this one isolated just in case. If it is broad or russet mites, they’ll destroy everything you have in about a week once they’re established
GiovanniJones
Well-Known Member
Thanks, I'll post updates there and here if anyone is interested.
GiovanniJones
Well-Known Member
Ok, will do. I'll post updates. Thanks.
ComfortCreator
Well-Known Member
My 2c is that ph is off by a bit, and the light at the top of the plant is affecting it the most.
That is not to say pests are not possible i am no expert at pests.
That is not to say pests are not possible i am no expert at pests.