GroErr
Well-Known Member
Lol, cheers ABM, could fit 2 more on the end but nothing ready worth flowering. We'll see how these fill in with some elbow room.
GroErr Grows...
Gquebed
Well-Known Member
Hey GroErr... was hoping you might inspect my pic below closely and maybe pose some suggestions as to what it shows...
I maybe a bit paraoid, but the same thing showed in my last round with this strain. I didnt think much of it then because a bit of necrosis is usual on the bottom lowers... but im seeing it again with this pic (all lowers) and i cant help worrying it may be the same story as what happened in my last run... maybe a sign of cal mag deficiency which i didnt recognice or tend to lastvround. Ive supplemented a bit this time...
Anyway, anybody is welcome to chime in...
I maybe a bit paraoid, but the same thing showed in my last round with this strain. I didnt think much of it then because a bit of necrosis is usual on the bottom lowers... but im seeing it again with this pic (all lowers) and i cant help worrying it may be the same story as what happened in my last run... maybe a sign of cal mag deficiency which i didnt recognice or tend to lastvround. Ive supplemented a bit this time...
Anyway, anybody is welcome to chime in...
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Bbcchance
Well-Known Member
Is it always in the lowers of the plant? Shiny leaves, brown spots, dry feeling? I'm guessing phosphorus I've had a few issues with it. I'm a bit lazy with pH sometimes
Gquebed
Well-Known Member
Well...last round i saw this in the lowers then had a raging deficiencies all around to the uppers. I thought it was lock out due to salt build up because i made a change in the routine. But now... im thinking maybe it was something else...maybe... ill have to see if this round this problem persists...Is it always in the lowers of the plant? Shiny leaves, brown spots, dry feeling? I'm guessing phosphorus I've had a few issues with it. I'm a bit lazy with pH sometimes
GroErr
Well-Known Member
Could be more to do with your ph have you checked it? The other thing I noticed is the center/left leaf looks like it could have some eggs on it unless it's something that was sprayed on it?
Gquebed
Well-Known Member
Im usually spot on with my pH ause i always check. But... with hps i always pHd to around 6.4 to 6.7 in veg. Hps in flower i would pH to 6.2 to 6.5. Maybe this changes wit cob?
And no...those arent eggs...just tiny brown spots.
Here is a another pic... notice the rusty veins and the canoeing of the tips...especially the one on the left. That must be telltale
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green217
Well-Known Member
I would try somecalmag
I'd try calcium, and make sure your ph isn't so high that it's locking it out. Let me know when you know for sure
GroErr
Well-Known Member
Mentioned ph because I had a similar problem crop up this summer when I tried a different soil mix which threw off my ph and had a couple of plants show similar issues. I ended up re-potting, broke up the roots a bit transplanted into my regular soil mix and they were fine.
Gquebed
Well-Known Member
I did my last watering. Think itll take a one ot two more to show... but ill update...
Gquebed
Well-Known Member
I wonder... what are the signs/symptoms of having too much light going on for the amount of available co2?
Just a thought.... i have two 4x4 areas side by side both lit up with 2 x Tasty's T4-2100s, which is a lot of light. And mostly passive intake of basment air, along with cold outside air being piped in for 10 mins of every hour.
Just a thought.... i have two 4x4 areas side by side both lit up with 2 x Tasty's T4-2100s, which is a lot of light. And mostly passive intake of basment air, along with cold outside air being piped in for 10 mins of every hour.
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GroErr
Well-Known Member
Interesting thought, is that a change from previous practice? You were running hps I believe so likely had a lot of air exchange going on. Not sure if that would affect them to the point of defs as I'd have no reference. My intake and exhaust are active/active 24/7, only changes I make is how much intake and exhaust based on time of year. Haven't gotten around to grabbing a co2 meter, have always wanted to measure the levels in there with so much air exchange going on.
Gquebed
Well-Known Member
With hps i used to have the exhaust fan and the intake fan switch on for 10 mins every hour. But also had a 720 cfm cooling the lights and while it was a sealed as well as could be it did cause neg pressure so always had a consta t flow of fresh air coming in.
Now that the cooling fan is gone... that isnt the case anymore... so i may have to run my exhaust and intake constantly now... will see...
My last feeding was 850 ppm with cal mag. Still seeing some deficiency. So... blasted a couple of the more vigorous ones with 1450 ppm with cal mag. See what that does... lol
GroErr
Well-Known Member
Yeah completely different environment. You'll need to tweak it until you have it dialed in. I've always thought constant air exchange or CO2 for indoor is a good idea. In my current setup constant air exchange is easy and cheap to operate. I grabbed a CO2 sensor with logging, I'd like to see where it is and how it fluctuates through the seasons. The plants certainly seem to like it.
Gquebed
Well-Known Member
For me it is a trade off (at -10 to -25). Constant air flow means low humidity.
pinner420
Well-Known Member
Manganese..
Gquebed
Well-Known Member
After doing a bit of research... i think the problem i have is just too much light...or the lights are just too close. Weird thing is ive backed them off to 24" above the canopy.... and still...
Thanks god the Tastys have a dimmer switch.
Anyway... @GroErr ... i know youre using the Tastys... can you tell me what you have in what space and how high you have them over the canopy...and are you using the dimmers?
Thanks god the Tastys have a dimmer switch.
Anyway... @GroErr ... i know youre using the Tastys... can you tell me what you have in what space and how high you have them over the canopy...and are you using the dimmers?
GroErr
Well-Known Member
I can't tell by your model how much wattage you're running as he's (Tasty) changed the models several times but kept the same model number in some cases. It's difficult to figure out what your wattage/sq. ft. For reference only my newer T2-1400's have dimmers and I'm running them full-on, running 600w over 3x6.5 right now or ~30w/sq. ft. I'm only early into the stretch so they're about 24-26" above canopy right now. I plan to move them down to 14-16" above canopy once they're finished stretching.
I doubt that would have the effects you're seeing on your lower leaves though. Still thinking cal-mag, or as @pinner420 mentioned possibly Mn. If you had too much light hitting them or too close, if anything you'd see some bleaching signs on your upper canopy leaves vs. defs/damage to lowers.
Gquebed
Well-Known Member
Well thats the thing... i didnt mention that i was seeing some very light bleaching up top because i didnt recognize as such. Never had that problem before. So after reading a specific article/pics... i saw that is what is going on with my plants....
And apparently that bleaching is an indication that the leaves are working very hard sucking up as much nutes as they can and "killing" themselves doing it, and isnt enough so they start canabalizing the lowers looking for more and those are the deficiencies im seeing, likely.
Depending on the intensity of the light and how rapid photosynth is... feeding more nutes can be even more damaging.
Might be barking up the wrong tree, but... its the only thing that makes sense right now. I mean... i just potted up a week ago so salt build up is very unlikely, pH is something i have always been meticulous about and my air exchange isnt so bad that it should cause this, i doubt...lol
coreywebster
Well-Known Member
Broad mites or Russet mites? Not saying it is but could cause the issues your seeing without been clear to the eye.