anyone ever seen this?

[stagafolaysa]

plants are 72 days in flower
finishing soon i hope
i've been giving some pk13/14 lately along with the 8-6-10 coco fertilizer. I was giving 1.5 EC, now I give 0.7 (also give some molasses)

so yeah they grow in coco
these are hindu kush

would love to hear what you think about these yellow blotches in the center of the pic. also seeing rust spots on the now. These are upper fan leaves of the buds, also seeing some of it on the small bud leaves.

i thought it was light/heat, but i'm pretty sure it's not

 

[PoopyTeaBags]

over nuted with a mag deficiecy... more then likely ph is off

could be something different if mag def its beginging stages...i say overnuted cause u have burnt tips...


you should be feeding it 0ec water if its going to finish soon... flush it not half feed.

 

[stagafolaysa]

thanks!! well, pH is right on 5.8. and, do you think it's possible that 1.5EC would be too high of a feeding?

i was thinking more about the composure of the ppm rather than the total quantity of it.

most of the grow I was feeding with 1.5EC of just coco (the 8-6-10), and then when I started giving 1.3 of coco and 0.2 of pk-13/14, it started doing this. well actually not at first, because I was doing it "sometimes" during the whole bloom, and only recently I got this.

(also, you know, tips can burn even when there is no over feeding, as a symptom of deficiency)

I also get much runoff and flush often to make sure no salt deposits. So I don't think it's plain old "too high ppm", but rather an overabundance of a certain element,

magnesium should be on lower leaves, no? i lost my bottom leaves a while ago, but I here I'm getting only the top most leaves burning. I've had mag def on this grow, and since then I give epsom salt as well (occasionally), but it looked nothing like this... then again, it was in veg.

and anyway, i'm not really sure how long they've got, which is why i'm lowering their nutes gradually. I've read quite a bit about how flushing can be counter-productive and reduce yield if done abruptly and too early. so i don't wanna do that.

then again, they have been going on way too long now, I want them to finish quickly now. I've some how come to the impression that flushing speeds things up in terms of ripening and getting them ambers. but it sounds so false to me.



addendum: details

How long has this problem been going on? 10-14 days
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents) no
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...) coco pots, drain to waste
What STRAIN are you growing? hindu kush
What was the establishing technique? (Were the seed or clone?) seed
What is the age of your plants? total 4 months now
How long have they been in there mixture they are in now?(coco,soiless etc..) always
How tall are the plants? about 3' i'd say. they are scrogged.
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? end of flower
What Technique are you using? sorry?
What substrate/medium are you using?(Hydroton, RockWool etc.) coco-perlite 50/50
What is the Water temperature? N/A
What color are your roots? White? Brown? Are your roots slimy? Don't know. Possible that they are somewhat brown and weak.
What Nutrient's are you using?(If growing soiless) HESI coco, pk13/14, supervit, powerzyme, molasses and sometimes magnesium sulfate
How much of each nutrient are you using with how much water? usually 1.5EC (750ppm), now 0.7 (350 ppm)
How often are you feeding? (If using soiless) before, every 6-7 days. now, every 3-4 days.
How often are you giving nutrients? (If using soiless) before, every 6-7 days. now, every 3-4 days.
If flowering, when did you switch over to using Bloom nutrients? I actually been using the coco (8-6-10) the whole time. It's mostly a bloom fert but my veg was excellent, actually.
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect) first coco, then p/k, then molasses/epsom etc.
What is the TDS/EC/PPM you are using currently 0.7 EC
What is the pH of the "Tank"? 5.8
How often are you testing your pH/PPM/EC/TDS? every feeding
Are you sure your calibration is correct on your equipment? yep
When was your last watering? today
What is your water temps? 71
When was your last feeding change? (ie. grow-bloom-micro-additional) I'm not really consistent, I change a lot.
How often do you clean your system: example: Flush out water replace with clean water and nutrients? I flush them constantly, today I flushed too.
What size bulb are you using? 400w HPS
How old is the bulbs you are using? not sure
What is the distance to the canopy? pretty tight. about 8-10".
What is your RH Factor(Relative Humidity)? 45-70.
What is the canopy temperature? 84-86. at day
What is the Day/Night Temp? (Include flucutaion range) 10 degrees difference I think
What is the current Air Flow? (cfm etc.) not sure
Tell us about your ventilation, intake exhaust and when its running and not running ? vent out take with a 160 cfm centrifugal running from the cooltube, and another 240cfm just moving air out of the closet. I have the close the room completely during lights out which spikes RH.
Is the fan blowing directly at plants? yes on the canopy two fans.
Is your water HARD or SOFT? RO water

If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives? about 0.08 EC

Has plant been recently pruned, cloned off of or pinched no

Are plant's infected with pest's Not really. Maybe some thrips I dunno but it's under control. I use neem.

 

[Neo 420]

START FLUSHING NOW... Your too late into flowering to try and remedy a issue. Flush dem ladies and harvest 2 weeks later...

 

[PoopyTeaBags]

START FLUSHING NOW... Your too late into flowering to try and remedy a issue. Flush dem ladies and harvest 2 weeks later...

what he said....


but regardless maybe your instruments are off... 1.5 e x is about where i feed unless its a light feeder (most indicas are not) it should not be over fed due to the amoutn of nutes.... if you meter is off it could build up salts and burn.... you deff have some burn just check your leaf tips... i notics wierd burns when my pot ph is off normally due to me being lazy and not calibrating my meters....

 

[CannaBunkerMan]

If it's not pH, then it's nute burn. Is the 5.8 the runoff, or your water in?

 

[hazy]

They're fine for that stage of flowering. Time to flush anyway.

 

[stagafolaysa]

well one thing's for sure, it is definitely too late to remedy anything, and this only just started so i was never really worried about it. what I am looking is not avoid aggravating the situation. I thought they are taking more time to ripen because they are getting N, so I tried giving them more pk than N this time, and I'm scared this may aggravate it. Then again, perhaps I will yield more by doing it and shorten the time? I don't know.

I definitely flushing and harvesting soon, two weeks yes, even less. 80 days should be more than enough. Problem is some of them are still white-haired... and trichs still clear. can I Actually chop them like that? have a feeling they won't be ready even in two weeks, idk.

 

[stagafolaysa]

If it's not pH, then it's nute burn. Is the 5.8 the runoff, or your water in?

both. my nutes buffer the RO water very very well.

 

[stagafolaysa]

what he said....


but regardless maybe your instruments are off... 1.5 e x is about where i feed unless its a light feeder (most indicas are not) it should not be over fed due to the amoutn of nutes.... if you meter is off it could build up salts and burn.... you deff have some burn just check your leaf tips... i notics wierd burns when my pot ph is off normally due to me being lazy and not calibrating my meters....

Well in fact I never calibrated it since I got it... 8 months maybe. But I just figured it wouldn't go off by much. And in testing my tap water I can see that it hasn't.

Also, I flush my medium often and always have much runoff, so I shouldn't be having salt buildup.

another possible direction is fungus gnats that i've been having throughout the growth pretty much. major pita, although I think their damage is not great.

 

[Neo 420]

I thought they are taking more time to ripen because they are getting N, so I tried giving them more pk than N this time, and I'm scared this may aggravate it.

Your going to screw the taste of your bud with N in the late stages...

I definitely flushing and harvesting soon, two weeks yes, even less. 80 days should be more than enough. Problem is some of them are still white-haired... and trichs still clear. can I Actually chop them like that? have a feeling they won't be ready even in two weeks, idk.

Pure water for two week......You will see mature hairs by then....