Trying to figure out what’s wrong with plants
- Thread starter Cdub2122
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Captain Cannabis
Well-Known Member
Some more info about your environment would be helpful for others, to help you diagnose the issue. Check the link in my signature about grow help for specifics.
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Drivejunky95
Well-Known Member
New growth, top of plant, yellowing at base of leaves, Iron, Zinc and/or Manganese deficiency.
Barney86
Well-Known Member
That s my initial thought too. Iron Def. Could be many things though.
Get some better photos up Cdub and well sort you out. Wide shot on the plants and a few not so close up with the lights off or a pair or shades over your camera lens. It's really hard to see things with the lights on or a flash.
Also ppm and ph of the res, and how far away are the lights from the canopy would be really helpful.
That s a hell of a grow for someone who doesn't know this stuff lol. 4000w is mega.
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Thank u I’ll take pictures tonight when lights are on Lol I mean I do know a decent amount about growing been doing for about 3 years. this jus the first time this particular issue has happened so I wasn to sure but I think I figured out the problem. that my gf always does laundry and doesn plug the lights switch back in so they haven’t been getting the 12/12 they need the past week
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I’m not a expert by any means so any input on hydroponic growing and getting better yields would be much Appreciated
Drivejunky95
Well-Known Member
Funny how light spectrum shows different pigments in the plant. It's good though, lots of yellow light would show lighter green in the plant just based on color wheel.
New growth is usually lighter in green hue. Plant is pumping all the new nutes to it.
@Barney86 confirmed too I think a possible Iron deficiency. Zinc and Manganese usually pair with Iron deficiency due to pH level uptake being similar. Is 6 pH the water going in or coming out? The sweet spot for those elements is 6.3 in soil, but.. it looks like it's just new growth just getting their share of new elements.
Do you know your runoff pH?
New growth is usually lighter in green hue. Plant is pumping all the new nutes to it.
@Barney86 confirmed too I think a possible Iron deficiency. Zinc and Manganese usually pair with Iron deficiency due to pH level uptake being similar. Is 6 pH the water going in or coming out? The sweet spot for those elements is 6.3 in soil, but.. it looks like it's just new growth just getting their share of new elements.
Do you know your runoff pH?
Barney86
Well-Known Member
Sorry forgot to respond mate. Ph is sound. Ppm is a bit high for my liking but they're big plants so shouldn't make any odds. Light sounds about right. Hmm...it does look like a def but I'm not entirely convinced. You doing regular res changes? The leaves going twisty like they are at the tops is usually a sign of a ph issue but at 6 you should be sweet. Could be an unbalanced res though if you haven't been changing it enough. 10 days max for most of us. Haven't got any nasty gunk growing down there I'm asuming ? Doesn't smell bad or that? Oh, do you know how much your ppm changes over a few days? If it goes up any more than about 10% every couple days then drop the nutes by about a quarter. Lot of questions but just thinking out loud so I don't miss anything. It's 6.30am and I'm rough lol.
It could also be light stress, you'll know your lights better than me though so if you usually run that height and your temps/rh haven't been too bad recently then you can rule that out.
Guess to cover all bases I'd say change the res, drop the base nutes a bit, little more of whatever you're iron (fe) bottle is. Usually in the calmag or micro but not familiar with your line. Make sure there's something like hydroguard in there to keep it all healthy and just to be safe, raise the lights 8 inches or so. And yeah, that should do it. If no improvement in 3 days then reasess.
I've just decided I'm gonna take the day off work too so ill be around most of the day bud.
It could also be light stress, you'll know your lights better than me though so if you usually run that height and your temps/rh haven't been too bad recently then you can rule that out.
Guess to cover all bases I'd say change the res, drop the base nutes a bit, little more of whatever you're iron (fe) bottle is. Usually in the calmag or micro but not familiar with your line. Make sure there's something like hydroguard in there to keep it all healthy and just to be safe, raise the lights 8 inches or so. And yeah, that should do it. If no improvement in 3 days then reasess.
I've just decided I'm gonna take the day off work too so ill be around most of the day bud.
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Ok thanx for the input in two of the plants the ph was way to high not sure how cause it’s all in the system they besides the buds not budding the roots are like a pearly can’t really tell if they smell because the nuits I use smell like rotten eggs ..they were only in flower a little over a week so I took all the one that were messing up out and put them back in veg and changes the water and put new plants in ..never put a plant back in to veg any tips
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What woyld u guys recommend for nuitriens to use..I was using flora grow , flor bloom, and flora micro but was getting annoyed at the end that my buds weren’t getting to where I wanted em and have just switched to humboldts secret nuitrients have yet to finish a cycle with that tho pretty pricey too..I started growing with a partner who knew a lot but he would bs so I jus started it my own so still a lot to learn
Barney86
Well-Known Member
I've never used GH mate but seen waaaay too many people produce wonderful things. They're probably the most like brand out there at the moment.
My personal preference is Dutch Pro. They're a bit pricey but fuck me they work. Swap the ridiculously priced explode for something else though, also scillica is a wicked additive to your res. Makes the plants nearly indestructible.
Your ph, shit, not sure how this went bold lol, should be dropping in bloom. It's not so just about garunteed Your nutes are too strong, does the ppm rise from day to day?
LiberalThinker
Well-Known Member
Not been here long, but this site is definitely the GH Flora Fanboys Club.
It's a good thing in that it is a reliable constant for reference and solving problems between members.
Drivejunky95
Well-Known Member
Using GH Koolbloom during bloom phase really pumps the plants full of phosphorous and potassium. Helps the plant grow its buds.
GH Floralicious also recommended for adding humid acids to the plant. They're able to uptake more nutes with the additive.
Ppm does sound little high, growing nice green plants in bloom at 575-600ppm.
GH Floralicious also recommended for adding humid acids to the plant. They're able to uptake more nutes with the additive.
Ppm does sound little high, growing nice green plants in bloom at 575-600ppm.
Barney86
Well-Known Member
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Not been here long, but this site is definitely the GH Flora Fanboys Club.
Every canna site is mate. As I said, I've never tried them but it's been that way the full 3 years I've been at it.
Drivejunky95
Well-Known Member
Brand not a big deal, it's all good by the plant, it's the stuff in it that the plants want in different amounts 
