Strange Even Yellowing

[dejayou30]

I have a Master Kush plant that is about 3 months old and is on day 17 of flower. I have noticed the big fan leaves have started yellowing very evenly, and it is a dull color of yellow. Some of the big fans are now getting tiny brown spots, and it is also starting to spread to the other newer growth too.

Its dark time right now, but I will have pics ASAP. But if anyone has a clue by this poor description, please let me know so I can take action right when the light comes on. Thanks in advance! :thumbsup::jointsmile:

Here's my stats:

Approx 3 month old plant, day 17 of flower
5 Gal DWC
2 4" cylindrical air stones with a bubble rope around the outside run off a 19W industrial air pump.
Sits in 2-3 Gallons of RO water with 400 PPM Pure Blend Pro and 200 PPM of GroTek CalMax
Have been foliar spraying every other day as of day 14 with Dutch Master Reverse (2 applications so far)
67-69° water temps
78-85° Air temps
35-45% RH

[dejayou30]

Here are my pics. I realized I forgot to include my pH, which is consistently around 5.4-5.9. However, sometimes when I go into the room in the morning to shut the night time curtain, the plant has consumed a ton of water and the pH has dropped to 4.2-4.5, but I immediately top off the bucket and readjust the pH to 5.5.

Any help would be appreciated!

[dejayou30]

Yo, anyone? :wtf:

[dejayou30]

Two big fan leaves are now turning brown at the edges and curling upwards, and the yellowing is spreading to the other large fans. Any suggestions? Anyone? Beuler? Beuler?

[phatsesh101]

im not a hydro guy but the spots could be burn from the foliar feed do u raise ur lights

she looks kinda hungry


my question is y the reverse? and what are ur results

[Greenthing]

Just a shot in the dark but do you reckon she could be root bound.
Your plant looks real nice though.:hippy:

[Divestoned]

It does sound like root-bound,but at this point I would'nt sweat it.You'll be smokin it before it ever dies from that.The pic's dont look that bad,alot of them get yellow in flower anyway.

Dive:stoned:

[Greenthing]

I see some nute burn on the leaves mainly on the tips and also on new growth.
That is just my opinion wait for replies from more experienced members.
Good luck.:hippy:
Edit, I dont spray anything on plants when in flower.:)

[dejayou30]

Reverse is just a hormone spray to inhibit the growth of male sex parts. I had some trouble with herms my first time around with this strain, so I've used it ever since and never looked back. I've never had seeds since. Could be my growing methods have improved or it could be just the spray, but I'm a n00b so I don't chance it. ;)

I guess she could be root bound, the roots are a huge mass, but it seems like there is a lot of room for them to keep growing. I could switch to a larger container pretty easily, so I might try it tomorrow and see what happens. But as for now I think the leaves turning brown are a gonner.

I started using Botanicare's Sweet supplement and upped the PPM to 900 because I thought it looked a bit underfed as well, but my humidity has been low so I didn't want to burn them like I did on my last grow.

I am mainly just worried because in the past, when the big fan leaves die, the yield suffers dramatically. I am looking to yield enough to last me like 4 months at 1/4 a week. I will try a larger container tomorrow and see what happens.

[dejayou30]

Here are some pics, day 19

[Greenthing]

Thats some root ball you have there i luv it.
Hey i think i read somewhere that you grew Carameliciuos before what do you think of it, I have one at the moment,sorry i know this is off topic.:hippy:

[Greenthing]

Thats some root ball you have there i luv it.
Hey i think i read somewhere that you grew Caramelicious before what do you think of it, I have one at the moment,sorry i know this is off topic.:hippy:

[metalhead419]

One thing i figured out with the Pureblend Pro is that when i mix it the ph goes to about 4.5, but if i let it sit for a day it goes to 5.8 all by itself. Are you adding ph up at all? I also switch to pure blend pro soil, from pure blend pro hydro for the last 2 weeks of flower, cause its 1.5/4/5 vs 2.5/2/5

[Weedhound]

deja....let me read vthis today and catch up.....

[phatsesh101]

hey so your mk hermies too huh ive been fighting that shit for awhile this is the first time i have used reverse and it seems to be working, although i still get an occasional nanner they seem to dry up b4 they crack i have yet to see any seeds though hmm interesting

how long do you run her?

the older fan leaves do yellow and die on her as she gets older i found mine to be quite hungry at the onset of flower but u look a bit further than 17-20 days now id say you look more like ur finishing week 3-4

i have noticed with mine that she looks done at week 8 but if u hold on she'll kick a bunch more pistols and continue to bud til about week 11 resulting in a bigger harvest. its weird cause the trichs also start to cloud at week 8 but dont start to amber till week 12

i thought at that stage in flower your ppm wouold be at about 1200 with hydro? iam a dirt grower

[dejayou30]

Thanks for all the replies. I have never grown Carmelicious, only Master and Purple Kush. Sorry!

I haven't switched to a bigger container yet, mainly because i can't find one deep enough. The yellowing is slowly progressing, so I will have to figure out something soon.

If anyone has any other suggestions, send them my way!

[Greenthing]

I have never grown Carmelicious, only Master and Purple Kush. Sorry.
My mistake i must have been:stoned: bump:hippy:

[the image reaper]

I'd bring the pH up a bit, try to hit around 5.8-5.9 ... I don't subscribe to the idea of zero nitrogen in flower, the plant still needs a trace of it ... also, as your plant ages, it draws from the fan leaves, and they naturally yellow, so keep that in mind ... good luck :smokin:

[phatsesh101]

im with image reaper on the need for n, especially on clones with a shorter veg time

[phatsesh101]

the older fan leaves do yellow and die on her as she gets older i found mine to be quite hungry at the onset of flower but u look a bit further than 17-20 days now id say you look more like ur finishing week 3-4



b4 i went organic i didnt use n in flower and my mk would have no fan leaves at all at flower finish,but the buds and other leaves in between would be fine

then i noticed most late flower flavor and oil increasers have slightly more than trace amounts of n for late flower hmmm :wtf:

[Weedhound]

im voting rootbound.....how much 02 you running in the buckets?. Also Deja, your fluxuating ph in the fours willl slow your plants growing down and we found it affected final yield as well. ours was cold temps and it made a big difference.

good luck

[dejayou30]

I've got tons of O2 in my bucket, a 19W industrial pump running 2 4" air stones and a 4W fish tank pump running a bubble rope. I am going to try to switch out to 18 gal tub tonight and see how she likes it.

[Weedhound]

good work deja..... keep us informed......good vibess :)

[dejayou30]

She's been in the 10 gal bin for 2 days now. I switched to a 36W industrial pump with four 4" air stones and a 4W aquarium pump on a bubble rope for the outside perimeter of the bin. So far the leaves aren't looking better but I don't think they are looking worse. Hopefully this works out because the buds are so huge right now at only day 24 that I am very excited to see what they will look like with all their leaves at 56 days.

[Weedhound]

if you can GENTLY crack open the rootball here and there for better penentration inside your rootball (a beauty!) and stick with good areation, your zymes etc.... lets hope she continues to give it those big buds!!

[dejayou30]

The big monster fan leaves on the main stalk are almost all consumed, but the rest of the plant is relatively green. I hope it is just the natural consumption due to the plant maturing through flower as someone was talking about. These buds are absolutely huge, and they aren't even half done. :thumbsup:

[MadSativa]

Just a shot in the dark but do you reckon she could be root bound.
Your plant looks real nice though.:hippy:

I seen that in root bound, I seen this too, with the 1st pics its kinda hard, but those look like little pots right.

It also looks like the bottom of the bucket is brown? But the root ball looks nice, Yeah a ph problem or a nutrient deficiency,

I once saw a guy whose room got some kinda disease in it and all his plants went from green to looking like these ones, then went all yellow at harvest, even the buds. weird ......

[dejayou30]

They were in a 5 gallon bucket but I moved them to a 10 gallon bin 4 (?) days ago. My pH is stable and monitored 24/7 and the PPM is at 1K so I don't think its a deficiency unless its nitrogen, in which case I'm not really concerned. The Pure Blend has a pretty decent amount of N and the GroTek CalMax I use is 1 part N so it should have enough.

The only brown you see in the bucket is from the nutes or possibly the mosquito dunk I put in there to eliminate the possibility of fungus gnats. I hate those things.

[Greenthing]

Sounds like its OK, and your buds are doing fine now.
I would let nature do its thing and not worry unless your buds start to suffer.
Any chance of a photo of those big buds?:hippy::):thumbsup:

[dejayou30]

Here's a pic of the whole plant and a few bud shots, Day 26

[Greenthing]

Thanks for the photos Dejayou30, looking good and only 26 days.:hippy::thumbsup:

[crabbyback]

Looking nice there. :D

:pipe: cb

[Divestoned]

Yep look's pretty good.

Dive:stoned:

[dejayou30]

So you guys don't think there's anything to worry about? I just found out yesterday the pH part of my Tri-Meter took a crap on me so the pH might have been a little off, but when I checked it with the liquid tester it was around 6.0-6.5 so it wasn't that far off from what it should be. I just don't want to have a bunch of sticks with no leaves and puny buds in 4 weeks like has happened in the past.

[crabbyback]

If you are losing more than just a few bottom fan leaves, then you might have a problem. I don't do "complicated hydro", so I can't help with your DWC. I use hempy buckets, which is kind of a no brainer -- good for old tired, stoned minds. :D

That said, I usually don't see much leaf loss until further into the bloom cycle (maybe 6 wks+) UNLESS either pH is out-of-whack, nutes are screwed up (was my mind engaged when I mixed the nutes last time?), or it is too hot. You might also check for bugs.

Weedhound is the one you want to talk to.

Luck,
:pipe: cb

[Greenthing]

I for one used to worry a lot when it was near harvest time but now i just don't do that anymore it a bit pointless to worry and get all stressed out.
What will be will be so don't worry about it.
If your PH was slightly off its not a big deal as long it was in the range for your style of growing.:hippy::)

[dejayou30]

Well the yellowing is certainly progressing through the levels of leaves. First it was the big fans on the main stalk, now it has moved to the fans on the individual branches, and soon enough it will be the main leaves around the buds. That is how it has always progressed in my past grows, and my harvest has been not even close to what it should be.

My room does get a little hot, topping out around 89 if I forget to open my night time curtian on a hot day. Other than that and the week or so where the pH might have been +.5 I can't think of what the issue would be. It seems that moving it into the larger container didn't help the problem. The roots are still healthy and white. I'm not sure what else to do. Where is Weedhound when you need her? :D

[Greenthing]

I a have just took a look at your first photos again and i am not sure but your sliver stuff on the walls looks all creased and it seems to have air bubbles in it too (It should be as flat on the walls as you can possibly get it) its hard to say going off your photos.
That would create hot spots in your grow space. and as you say everything else is as it should be, then all i can think is it may be an environment problem.:hippy:
Just another guess.

[crabbyback]

A temp of 89 degrees F in the bloom room is really pushing it. If you are only touching 89 quickly and then dropping into more managable temps, you may be ok.

Also, unless you live in the southern hemisphere (or somewhere very chilly), summer is just starting for you. Your grow room temps will not go down by themselves, and may actually rise unless you are running air conditioning. If your are, crank it up.

If you are only at day 26 of bloom now, you have at least another 4 weeks until harvest, depending on strain. Unless you get the temps down some, you may not be happy with your yield.

Since I live in the steamy south, I have to finish up with the HIDs in April before the heat sets in.

IMO,
:pipe: cb

[crabbyback]

DJ, please tell me why you are spraying every other day with Reverse?

I am not experienced with all the various suppliments. I thought Reverse was used for plants that hermie. Is that happening to your Master Kush plant or are you using it as a preventative?

Many times the combination of high temps and (any) foliar sprays can cause problems. Why not drop it for a while and see if things improve?

:pipe: cb

[dejayou30]

The temps are only up to 89 when I am not around to open up the curtain right away. Otherwise, the temps are 79-85. I only sprayed Reverse through week three, and may hit them again in the 5th week and it has been all preventative. I had the strain herm my first go around and had some seeds so I have used Reverse ever since.

Also, yes, the mylar is old, torn, and dingy with a year and a half of residue from sprays, dirt, etc. so its not ideal. However I have moved the thermometer around throughout the room and get pretty consistent temps wherever I put it so I don't think its creating hot spots or anything.

I'm in the midwest, so the temps are in the 80's right now, and the end of 8 weeks for me is like June 23rd I think so it will be cutting it close with the intense summer heat coming in. Last year I was projected to finish midway through June and the temps were good but I killed her 2.5 weeks before the finish so hopefully everything holds out. I'm hoping for at least 5 oz to last me until September when I can fire up the HID again.

Thanks for all the input from everyone!

[Weedhound]

Deja Are you indeed spraying thst plant every other w/Reverse? I may well possibly have gotten that wrong; so just doublechecking.......
in your free time paint your mylaar flat white. Itll help cool your area too. and stop hot spots. Stay cleaner.

How is genersal growing of plant...happy orn somewhat slow?
I personallly dont like THAT much yellowing so quickly but she's pretty big so gets itw ;own evaluation. How are buds oming along? MK shoul NOT be skimpy! :wtf:

[Weedhound]

ignore reverse q's deja......whats your feeed schedule again????

[dejayou30]

The buds are coming along very nice. The growth seems pretty normal, and I examined all the main top buds last night and they are all getting very full and looking very promising. The leaves are now turning yellow from tip to base and sort of curling down and under, like a claw. They look like they did when my roots were rotted, only my roots are a huge thriving white mass so I don't know what the issue is.

I am in 10 gallon bin DWC and feeding at about 1100 PPM with 250 PPM CalMax (GroTek), 200 PPM Sweet (Botanicare), and 650 PPM PBP Bloom (Botanicare). I alternate 1-1.5 gallon of RO water and 1 gal of 1000 PPM nute/Sweet solution, I add a gallon every day and only add CalMax at the res change.

[dejayou30]

Scratch that last update. The leaves that were curled and yellowing from front to back have started turning back to normal. I think it was a matter of the pH being out of whack for who knows how long. But the fan leaves are still doing the even yellowing thing and dying by the day, so IDK whats up. But everything I can think of is in check, so IDK if its natural aging of the plant since its so huge or what.

[Greenthing]

But the fan leaves are still doing the even yellowing thing and dying by the day, so IDK whats up. But everything I can think of is in check, so IDK if its natural aging of the plant since its so huge or what.
I reckon your right natural let nature take its course.:hippy::)

[dejayou30]

FOr some reason I don't think that is the case because its still yellowing at an alarming rate and still has 3.5 weeks left. But that said, I have no idea what the issue could be. Hopefully enough of the leaves stay green to feed those buds and make them even fatter. Thanks for all the help! :thumbsup::jointsmile:

[dejayou30]

Here's a pic update in case anyone is interested. I think I was overfeeding a bit judging from the yellowing edges and curling, so I did a res change tonight and backed off to about 800 PPM. Hopefully I can keep her there for the last two weeks of feeding without any more leaf loss. She is really starting to put on some serious mass, can't wait till she's done! :thumbsup: :jointsmile:

[crabbyback]

:jawdropper: Damn.
I was expecting to see some undersized, sickly, ailing plants. :S2:

I believe you will be just fine. I grow MK and she is a great yielder, even when things don't go perfectly. And even better, she tends to "auto manicure" before harvest and gets rid of most of her big leaves the last few weeks. Makes for very easy manicuring. (Can you tell I hate that chore?)

nice job there,
:pipe: cb

[dejayou30]

Haha thanks crabbyback. I have definitely had my fair share of those sickly ailing plants so its nice to have a decent one finally. Do you think my diagnosis of overfeeding was correct? And yeah, manicuring sucks, but its a labor of love. :thumbsup:

[Greenthing]

Well done, its looking fine now:):thumbsup::hippy:

[Weedhound]

she's saying she's ....cramped to me.......if that were a soil plant i would transplant to a larger container based on that photo. I know she is in hydro; it just looks pretty classic However you are right in the middlle and MK is quick finisher as a rule so if you want to try to just finish out thats good too.

Hey.....whats the ph story?

[dejayou30]

I've moved her from a 5 gallon bucket to a 10 gallon tub a couple weeks ago, and she's only filling up about 30% of the bin so I don't think she's root bound any more. The roots can't move down very much farther but there's a little room, and there's TONS of room to the side of the root ball. I tried cracking the ball open a bit but its pretty solid and I don't want to break any of the roots, and the inside of the ball doesn't look like its rotting or anything and I'm pumping 40W worth of air in there so I think the roots are doing alright. I also got new air stones because a couple of mine were clogged a bit, so now its getting even more air.

The pH was out of whack for at least a week because my NutraDip Tri-Meter shorted out on me. I was a little skeptical of it constantly reading 5.3 day after day, so I checked it in my other buckets and it stayed the same and I knew something was up. I tried to calibrate it and it still read 5.3. Then I unplugged it and plugged it back in and it read 16.6 and wouldn't move. I had to send it in, but the good thing is, the guy that owns the hydro shop I go to is going to give me a FREE replacement ($250 meter) for being a good long time customer so I don't have to wait 3 months to get a new one back from the manufacturer. :thumbsup::thumbsup::thumbsup:

I've been using an Oakton pH2 and keeping the pH at around 5.5-5.8. The PPM is around 850 right now, so hopefully some of the leaves come back.

Not sure what else to do. :wtf:

[crabbyback]

Dunno dude. Got nada experience with DWC or any nutes other than the Advanced Nutrients line and molasses.

She looks real good to me. She's just using up the N in her fan leaves because she's not getting as much as she wants when you feed bloom nutes. Excess N during bloom stifles bud production and increases leaf mass, certainly not what we want. :weedpoke:

You said she would be finishing up around June 23, right? That is only 3 weeks away and in another week or so, you will start flushing, which will cause increased yellowing. I think you are just seeing the natural progression of the bloom cycle with MK.

don't worry, be happy
:pipe: cb

[dukesdean]

I have a Master Kush plant that is about 3 months old and is on day 17 of flower. I have noticed the big fan leaves have started yellowing very evenly, and it is a dull color of yellow. Some of the big fans are now getting tiny brown spots, and it is also starting to spread to the other newer growth too.

Its dark time right now, but I will have pics ASAP. But if anyone has a clue by this poor description, please let me know so I can take action right when the light comes on. Thanks in advance! :thumbsup::jointsmile:

Here's my stats:

Approx 3 month old plant, day 17 of flower
5 Gal DWC
2 4" cylindrical air stones with a bubble rope around the outside run off a 19W industrial air pump.
Sits in 2-3 Gallons of RO water with 400 PPM Pure Blend Pro and 200 PPM of GroTek CalMax
Have been foliar spraying every other day as of day 14 with Dutch Master Reverse (2 applications so far)
67-69° water temps
78-85° Air temps
35-45% RH

Master Kush seems to do that alot, but I usually keep giving them plenty of N. Botanicare has a good product called Power plant. I would add a little of that about now to your mix. I usually add Power Plant first then the flowing food after I mix the power plant. You may be able to just use a bit more of Cal-Mag by Botanicare Its also really good when using distilled water, but if your using tap water, Power Plant I think would do it for you.

[dukesdean]

Master Kush seems to do that alot, but I usually keep giving them plenty of N. Botanicare has a good product called Power plant. I would add a little of that about now to your mix. I usually add Power Plant first then the flowing food after I mix the power plant. You may be able to just use a bit more of Cal-Mag by Botanicare Its also really good when using distilled water, but if your using tap water, Power Plant I think would do it for you.

Cal-Mag by Botanicare Has alot of N, but you know to decrease that toward the last 15-20 days:smokin:

[Weedhound]

cool deal with the new meter. :thumbsup:

[dejayou30]

Cool, I think I will just keep caring for her as normal and hope you are right about consuming the leaves. Today is Day 35, so I'm on the home stretch. Two more weeks of feeding and then the flush. Thanks for all the help, and I will probably post some more pics in a couple weeks so you can see how she ended up since this has pretty much become my grow log. Thanks everyone! :thumbsup::jointsmile:

[dejayou30]

Started a log for my last couple weeks of flower

http://boards.cannabis.com/grow-log/172157-master-kush.html#post1996695