in need of pro: tops yellow/copperish color

ThorGanjason

ThorGanjason

Well-Known Member
OK, I'm gonna try and make this as small as possible, lol.

600w hps (vegged under 400 mh). 4x2x6 1/2 grow tent. (1.3x .66 x 2 m). 435 cfm 6" inline fan, yadda yadda. Temps 75-77 day, 66-72 night. Humidity has been all over the place lately (due to intake coming from outside through my air conditioner). Usually around 50-60 but lots of rain lately has made it as high as 80%
Ffof soil, been in there over six weeks, mostly 3 gallon smart pots (tomorrow 5 gallon)
Roots organics master pack 5 mil feeding schedule. Feed once a week and flush once a week. Last feeding was 1/5 strength, before that pH'd flush, before that full feeding.

Some plants started showing pistils as early as august 3rd; they were still under 16 hours of light but the switch from blue to yellow spectrum induced flowering. Were showing light stress at the end of the day, attributed it to them being fully mature and ready to flower and still getting 16 hours of light, plus the shock from the new spectrum. The tops were curling down, which has gotten better but they are staying too yellow on the new growth and are starting to show this weird copper color on the tops as well. The small top leaves have a spongy feeling to them, not crisp.

IMG_20130814_095920.jpgIMG_20130814_095944.jpgYou can see my younger og kush on the right, he's been under the same conditions as the other ones up until my last full strength feed (my first feeding with flower nutes for the rest, so he got veg nutes but they were showing the light stress at the time, except for him as well. Probably BC he wasn't under the metal halide as long he's only 2-3 weeks old. The others are older than they look; it took me almost a month to get my environment under control and they grew very slowly.
IMG_20130814_100012.jpgIMG_20130814_095900.jpgIMG_20130814_095846.jpgIMG_20130814_095920.jpg

At this point I'm thinking either a deficiency (not likely BC up until the problems I ran my nutes hot) of one of the immobile elements, and thats why its showing up on top in new growth. or I'm having a pH problem, that's locking out one of the immobile elements from being available to the plant.

As always, thanks in advance
 
ThorGanjason

ThorGanjason

Well-Known Member
Bump. Fwiw

Edit: forgot to add, when I did the last full feed I was in a hurry. if I mix my nutes 24 hours ahead of time they buffer out almost completely and the pH is over 6.5 and I have to take it down smidge. But right when I mix them, the pH is like 4 or so, and I have to take them up.

Anyways, I was in a hurry and kept adding pH plus, probably added it 3 or 4 times trying to take it up. I eventually just fed even tho it still said it was low, BC I had used like a fifth of the bottle of buffer (small bottle, but still). That night was when they were the worst.

BUT, they were curling before that. They didn't have the copperish color yet, but they were still light and curled by the evening, but that day that I fed they were the worst. I flushed the next time and they seemed a lot better, and then fed with a weak concentration. It was around that time they started getting the copper color.

So I'm pretty sure my pH got fucked up. Does anyone have any idea which element/deficiency causes the copper color?

Sorry for the late response, I didn't want to make the first post humongous and there's trouble in China town at the home front for me today that I've been dealing with.
 
ThorGanjason

ThorGanjason

Well-Known Member
Man, they don't exactly look like those; mine have a really distinct copper color that goes beyond just the tip top new growth. Mine are a little more yellow/lighter than his new growth is.

BUT! I am definitely noticing the weird small spots of brown in the smallest, newest growth on his. I did used to have that with mine, as well as the darker, kind of brownish/purplish tent in the leaf margins and edges on the leafs a node or two down from the new growth. I attributed both of these to over feeding at the time.

My leaves also do have the sponginess look that his have (on the newest/newer growth). I can literally squeeze the leaf and feel it spreading out between my thumb and finger. Something's not right with its internal water pressure.
 
nova1992

nova1992

Well-Known Member
well with the thread i was told they were that colour due to me switching lights (went from cfl's to led)
it went away a few weeks later.
i dunno whats goin on!
i think new leafs are supposed to be spongy.
just wait a bit and someone more experienced can answer.
also my plants were starting to show either calcium or magnesium def cause i didnt realise that my ferts had none in them. also why my stems were so red but i added calmag and everything is great now.
that colour on my leafs in that thread arent due to over feeding i don't think, cause i would water, water, feed, water, water, feed and i was only using half strength nutes
 
Smonkey

Smonkey

Well-Known Member
almost looks like my seedling before i put it outside ;) View attachment 2776959
ThorGanjason said:
OK, I'm gonna try and make this as small as possible, lol.

600w hps (vegged under 400 mh). 4x2x6 1/2 grow tent. (1.3x .66 x 2 m). 435 cfm 6" inline fan, yadda yadda. Temps 75-77 day, 66-72 night. Humidity has been all over the place lately (due to intake coming from outside through my air conditioner). Usually around 50-60 but lots of rain lately has made it as high as 80%
Ffof soil, been in there over six weeks, mostly 3 gallon smart pots (tomorrow 5 gallon)
Roots organics master pack 5 mil feeding schedule. Feed once a week and flush once a week. Last feeding was 1/5 strength, before that pH'd flush, before that full feeding.

Some plants started showing pistils as early as august 3rd; they were still under 16 hours of light but the switch from blue to yellow spectrum induced flowering. Were showing light stress at the end of the day, attributed it to them being fully mature and ready to flower and still getting 16 hours of light, plus the shock from the new spectrum. The tops were curling down, which has gotten better but they are staying too yellow on the new growth and are starting to show this weird copper color on the tops as well. The small top leaves have a spongy feeling to them, not crisp.

View attachment 2776504View attachment 2776506You can see my younger og kush on the right, he's been under the same conditions as the other ones up until my last full strength feed (my first feeding with flower nutes for the rest, so he got veg nutes but they were showing the light stress at the time, except for him as well. Probably BC he wasn't under the metal halide as long he's only 2-3 weeks old. The others are older than they look; it took me almost a month to get my environment under control and they grew very slowly.
View attachment 2776512View attachment 2776513View attachment 2776514View attachment 2776504

At this point I'm thinking either a deficiency (not likely BC up until the problems I ran my nutes hot) of one of the immobile elements, and thats why its showing up on top in new growth. or I'm having a pH problem, that's locking out one of the immobile elements from being available to the plant.

As always, thanks in advance
Click to expand...
 
Smonkey

Smonkey

Well-Known Member
mine did that exact same thing when i had it under CFLs ant t8's ( partially cause of a ph problem and i didnt have a proper feeding chedule) but i fed her some nutes( just soil not leaves) and put her outside for a few hours she perked right back up and i put her back under cfls
 
P

PaxEtBonum

Member
ThorGanjason said:
Man, they don't exactly look like those; mine have a really distinct copper color that goes beyond just the tip top new growth. Mine are a little more yellow/lighter than his new growth is.

BUT! I am definitely noticing the weird small spots of brown in the smallest, newest growth on his. I did used to have that with mine, as well as the darker, kind of brownish/purplish tent in the leaf margins and edges on the leafs a node or two down from the new growth. I attributed both of these to over feeding at the time.

My leaves also do have the sponginess look that his have (on the newest/newer growth). I can literally squeeze the leaf and feel it spreading out between my thumb and finger. Something's not right with its internal water pressure.
Click to expand...
Pics would help.
 
ThorGanjason

ThorGanjason

Well-Known Member
PaxEtBonum said:
Pics would help.
Click to expand...
I'll try and get some better ones. But what I was talking about mostly in that post was how my plants looked like his (in his thread, the link he posted) earlier on, like when they were only a few weeks old and I started feeding. My plants were green and healthy, but when I started giving them nutes I started getting the same dark spots towards the top, in the new growth. Almost like a brownish/purplish color.

And Nova, yeah I mean new growth is supposed to be soft and healthy leaves "cool to the touch" instead of crispy, but mine are particularly spongey. I'm gonna try and get better pics today, I think you guys will see what I'm talking about with the copper color. My camera doesn't have very true color representation.

On another note, I really think that my problem, is that my pH got fucked up and its locking out copper. I found a bunch of pics last night, and some of them were almost identical to what I was facing.

I didn't have time to actually read and do research, just looked at pictures so far but it was kind of weird BC some of them showed yellowing on the bottom, some in the middle, some in the top-- so I can't tell by the pictures if copper is mobile or semi-mobile or what. There were a lot of different pictures that looked really different, but I remember reading that a Cu deficiency can eventually lock out iron, which can be fatal.

Lemme try and get more info, the plants are looking much better today.
 
ArCaned

ArCaned

Active Member
its N def caused by rapid growth, try upping the nutes a little and see how it goes. plants look good ;) gj
 
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