Guide to Nutrient Deficiency or Toxicity

Thank you Nick for this amazing post.
I've read tons of stuff on RUI and learned plenty in the last 2-3 month. I've yet to come across a post that packs all this useful info in one post. This is my first grow and I'm doing it in soil and using only organic fertz.
BTW this is my first reply on RIU

Thank you again man.

Great info, unfortunately almost all of the pics have been removed. Please repost!! I'm trying to figure out what's up into garden. I know my water has no iron in it, just confirmed that yesterday. Odd for an old home but I have a well and a new filter setup on the whole home line, I guess it works (lol). I've been battling something I'm not sure yet if it's calcium deficiency (also have very soft water), or if it's K deficiency. I switched to a new nute (Flying Skull) and neglected to put any of the bloom mix with the grow mix the first week (I'm in late veg) but their grow mix is straight N no P or K, the second week I added 1/4 of the amount of bloom mix as called for during bloom when I made up my grow nute. The issue didn't show itself until 2 days ago and to me the timing makes sense for K deficiency. Today, I dumped my reservoir and mixed up a fresh batch of TechnaFlora BC nutes, hope that does the trick. Pics attached. If anyone has any tips or knows what I'm showing in my pics please let me know. I think the poss is low but it could be nute burn being in old growth, not new, and mainly in the tips and teeth tips of the leaf serrations. Thanks in advance for any ideas.
I'll have to post pics in a minute. Won't let me from my phone today.

Hi guys, its my first time growing,I got northern lights autoflower its 40 days from seed, one of my plants its not growing like the other one and the color is diferent, im giving them 2-7-7 schultz, 1 100 watts and 2 60 watts cfls 7 hours of sunshine 4 times a week cuz of the clima, you have any idea why the other one is growing like that ill send some pics

panchin20 said:

Hi guys, its my first time growing,I got northern lights autoflower its 40 days from seed, one of my plants its not growing like the other one and the color is diferent, im giving them 2-7-7 schultz, 1 100 watts and 2 60 watts cfls 7 hours of sunshine 4 times a week cuz of the clima, you have any idea why the other one is growing like that ill send some pics

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They both look to showing signs of a Nitrogen deficiency. One a bit more than the other. You need more N in their diet and less P.

What about 10-15-10, I was using that in the beginning

panchin20 said:

What about 10-15-10, I was using that in the beginning

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It will help with the N deficiency. But still too much P IMO.

Any stuff that I can use, I want to grow some good stuff, thanks alexander

Can anyone tell me what's going on with my girls it's like they are dying in front of my eyes the leafs are weird looking and hooking and cork screwing and they are yellow but ruff yellow. They are clones and they had this problem from the day I got them when they were like 4 inches big maybe 6 inches. It went away after I transplanted from the little solo cup to a gallon and a half, but it is now back they are in 5 gallon buckets with plenty of drainage and I been keeping ph at 6 2-6.5 I am also using soil for nutes I'm using the flora grow flora bloom and flora micro with calmag+ and GH root enhancer. They are in week 6 of veg. Someone please help. The TDS going in is 780-850 TDS coming out is 950-1100. PH in and out is 6.2-6.5. I have a good dose if the Flora grow and calmag and micro with a little bloom. The soil is recycled from my last grow. But I don't think that's a problem because I got the clones and the leafs were the same just not as bad or no were near.

Thanks for the valuable info I think i am in the nute burn nitrogen deficiency section, so I will stay calm not panic and flush slowly. Thanks again

Thank you for posting this helpfull thread. Learned a great deal. Thanks again.

What could this be

This is my first time growing, ive done alot of research and consider myself somewhat educated on growing but ive run into a problem with my plant growing outdoors.The pistils on one branch are turning brown prematurely. The rest of the plant looks great its just the one branch. What could the problem be?
Bad Branch

Good Flowers

I know this is way late to say it but this was f$&@!' awesome! Thank u for taking the time.
I'd say nitro toxicity is a big prob for me as a new grower without proper drainage watch out fellow newbies!

Hi could someone tell me what problem i have as its only on the little bottom leaves wher i feed not the tops and only 1 on each plant and how could i fix the problem thanks

Hey all! Can't help it...FULL blown panic mode right now.. So I feel like I have several deficiencies mostly P and K? due to flushing out probably all nuits with Bushdoctors Sledgehammer. After using the Sledgehammer as directed from chart i did some research and read nothing but horror stories. The next day after using it and my girls are in terrible shape. Here are the pics. Could this happen from just one flush? Should I hit them again with the normal mix and hope for a recovery? FF/BD Nuits. Week 7 flower. Medium is Sunshine Advanced mix. 55% peat moss 45% coco, (added perlite)...ph run off is about 6. 27gal totes, 1000w HPS per tree.

Who knows why the back of leaves turn purple? My 2 weeks old seedlings are showing that under the leaves. Maybe genetics? Or cold temperatures? Im growing aurora indica. Tnx in advance for the help!!

Hello guys ssory to bother this thread, i just wan to share my grow, and ask about her problem.


the leaves just keep growing and the supposedly bud sites are not having actual buds, just new leaf growth all over, but every new leaf growth has pistils too, what is happening?



pistils growing every node of the plant so definitely its a female (not sure if it will turn to be hermie later on, i wish it wont.

Does it look good for week 1 flowering ? This plant actually flowered the last couple of months then was interrupted by light leak and made it reveg for weeks,
After fixing those light leaks, it took 4 weeks to recover and restart the flowering again. By now its 1week 2 days,

DOES IT LOOK RIGHT FOR 1 WEEK OF FLOWERING?

My seeds came from an outdoor plant, on a marijuana farm and grew like 6 ft tall. Is it possible to grow its seeds indoors and make it smaller than the mother plant that is a landrace sativa.

Hey everyone, just finished buying the last of my equipment and wanted to be sure my lovely ladies are in great health for the increase in light. Currently running 1x 4 light 200w T5 cpf, 2x 125w cpf (one red one blue) and 1x 200w cpf. Upgrading to 2x 600w high intensity bulbs, 1 hps 1 bmh. Started off with a little over fertilization but transplanted into 15gal pots and have been going pretty light since. Also I'm in a 50/50 mix of fox farms soil and coco.

Again looking for some advice to be sure my girls are ready for the light increase without too much stress. They are from seeds and about 12-13 weeks from when they had sprouted. Thinking another week or 2 under the new lights before flowering them.

Any advice would be great!
Thanks,
-Dank

Photos dude. of the entire plant, entire grow, affected leaves, dirt. i gotta know what your feeding, what the pH is, temps, humidity...

droopy? could be pH, could be overwatering, could be a micro nute deficiency causing weakened stems...
Shriveled leaves... underwatering, micro nute deficiency, nute burn, pH burn, salt burn
yellowing... N deficiency (99% of the times if in veg growth)

i gotta see pics.

honestly, id rather you guys post pics and not say anything, then not post pics and my brain have to try to piece together what your describing.

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I got something similar. Running DWC bubblers, temps range 74-79. plants are about 18-24 inches away from 250w MH. Gorilla Glue clones just transplanted a few days ago. They came with fn brown slime algae and since I ph between 5.5-5.9 everyday because its up to 6.5, its telling me that the slime is trying to gain a foothold, so I flushed out the system today and replenished with calmag RO water and fed base nutes at 25% strength. Im gathering the following is a N deficiency, yes? I'm moving the plants another foot away so that they will extend a little more. They've grown an inch over the past few days but were spotting yellow to brown on the inner part of the leaves not on the edge.

They started out like this:



Now, a few days later, they look like this before the water change.


Oh I did inoculate the netpot with freshly brewed tea as well knowing theres probably still algae building up in the rockwool before adding the nutes and pH'd to 5.5 to see if there is upward movement over night.

this plant is in a 5 gallon dwc bucket. the plant was vegged for a month and is in 1st week of flower. the roots are mostly cables and not much fish bones on them. I haven't been using my nutes full strength, think that's the problem? using AN sensie ph perfect and hobbyist bundle.