Guide to Nutrient Deficiency or Toxicity

**nick17gar** · 06-21-2012, 04:10 AM

Originally Posted by Private Stash

Great Thread and postings here..Thanks! Just thought I would add some Pic's of my own..Hope these can help.Attachment 2203141 Attachment 2203144 Attachment 2203147 This is a Calcium deficiency. This was NOT caused by lack of Ca in my mix! I'll explain in a sec...This deficiency was caused due to a lockout! My Ph in my DWC set up rose to 6.2 for a couple days

Calcium will get locked out in Hydro above 5.9 and in soil below 6.4 If I would have added additional Ca to my system,I would have created a toxicity! Therefore making matters worse! Before adding more Fert. to treat a deficiency be sure you are checking your Ph levels also! At the first signs of a deficiency,correct your Ph if needed FIRST!...THEN add more fert if NEW growth is still affected. Once a leaf is scarred it will NOT heal! I've seen posts where people expect to see the damaged leaf heal,and when it doesn't they continue to add more fert! BAD!
BTW I am using AN sensi bloom A/B. It already has Ca in it! A/N recommends(on a DWC setup) topping off the res with 100ppmCal/mag(r/o water) which I do. That is why I know it is due to a lock out(plus my Ph reading was obvious!). Thanks for letting me throw my 2 cents in...Grow in Peace!!

well at 6.4 you can be locking out a lot of other nutes. i wouldnt go as far as to say thats also low on P
Nutrient Chart.jpg

**nick17gar** · 06-21-2012, 04:21 AM

Originally Posted by monkeeboi69

HI everyone im growing a clone for the first time and i just recently added nutes and this problem began. its been 4 days now and i was hoping maybe someone could help. ive had the ph at about 6-6.5 in soil.

forgot to mention im using Fossil Fuel, Fox Farms Grow Big, and Roots Organics "Trinity" all at 1/4 strength and i just added them for the first time.

ok, pics 1 and 3 are the same issue, the first is severe, the 3rd is moderate. am im thinking it could be a mix of a N def, and some potassium. your pH is kinda low and could be blocking out the nutes, so i wouldnt add anything for a bit. id get some 7.0 buffer from a pet store for fishtanks and add that to all the upcoming feedings til your closer to 7 in the run off, try dolomitic lime too, but the issue is thats easier to use before the grow, and not during (i got some that were pellets, and they worked great but a hassle when already in dirt).

pic 2 is odd. it still looks like its a little low on N, but the damage on that leaf looks like it could be bugs too. have you looked under the leaves? if its not bugs, then your pH is causing structural damage to the leaf, and thats no good either. im less likely to go with that tho, pH does some really funky shit, and that leaf isnt that wierd, its just damaged.

either way, mix your nutrients like normal, and raise the solutions´ pH to 7 or even 7.5 and add it in. dont add in a ton of nutes... yet

**nick17gar** · 06-21-2012, 04:23 AM

Originally Posted by TDM

I did not see my plant prb in pics.
Yellowing, small spindly leaves towards top
Treating w/Cal-MagAttachment 2219197 Attachment 2219202

how hot is the area these plants are in? those leaves are hella taco´d.
whats the pH? if thats ok, id add more N, and micro nutes.

**jaykyjoh** · 06-21-2012, 11:27 AM

Hey guys Im a super noob. Im about a month into flowering and im seeing a few issues with plants that have previously been doing well. I know part of the problem is my PH meter is broken. I havent been able to buy another yet. 1 sativa plant & indica are giving me trouble. the indica was given to me by a friend and it looks horrible now.IMG_00000272.jpg IMG_00000274.jpg IMG_00000275.jpg Im growing in Soil in a 40" x 40" grow tent with a 400 hps light. Let me know the best way to make it to harvest with most of my crop intact

**vagellie007** · 06-21-2012, 03:25 PM

hey guys whats up, i'm a total new b to growing and i learned quite a bit just reading this forum , i have 2 plants that were stunt for a bit i thought it was n def so i added some nutrients, i'm using fox farm trio and soil. i had forgot them in my closet with the lamp for 2 days and they got really yellow so i watered them a bit and they seem to be coming around. my current issue is the brown spots and tips and i have no clue whats causing it. and when can i tell when to put them in the ground? sry for all the questions but i'm in asking mode and very interested in learning more. i ty all ahead of time and i'll post pics ev week to show u where i stand.

**nick17gar** · 06-21-2012, 10:18 PM

Originally Posted by jaykyjoh

Hey guys Im a super noob. Im about a month into flowering and im seeing a few issues with plants that have previously been doing well. I know part of the problem is my PH meter is broken. I havent been able to buy another yet. 1 sativa plant & indica are giving me trouble. the indica was given to me by a friend and it looks horrible now.IMG_00000272.jpg IMG_00000274.jpg IMG_00000275.jpg Im growing in Soil in a 40" x 40" grow tent with a 400 hps light. Let me know the best way to make it to harvest with most of my crop intact

well you got all sorts of issues going on, if you cant get a pH thing, then your gonna have to play it be ear
start off with water, add in your nutes, go heavy with all the micro nutes, and lots of P, K. thats what you need, its just hard to tell if your deficient, of if its pH lockout. either way, add more and hope the pH is ok...?

seems ass backwards to me, but yea.

**nick17gar** · 06-21-2012, 10:21 PM

Originally Posted by vagellie007

hey guys whats up, i'm a total new b to growing and i learned quite a bit just reading this forum , i have 2 plants that were stunt for a bit i thought it was n def so i added some nutrients, i'm using fox farm trio and soil. i had forgot them in my closet with the lamp for 2 days and they got really yellow so i watered them a bit and they seem to be coming around. my current issue is the brown spots and tips and i have no clue whats causing it. and when can i tell when to put them in the ground? sry for all the questions but i'm in asking mode and very interested in learning more. i ty all ahead of time and i'll post pics ev week to show u where i stand.

um... get a timer, and stop moving them around. put them on a 24/0 schedule or a 20/4 or maybe 18/6... anyways, add nitrogen, add micro nutes, and a little P and K. check PH and you should be fine.

its just hungry

**jaykyjoh** · 06-22-2012, 09:59 AM

Originally Posted by nick17gar

well you got all sorts of issues going on, if you cant get a pH thing, then your gonna have to play it be ear
start off with water, add in your nutes, go heavy with all the micro nutes, and lots of P, K. thats what you need, its just hard to tell if your deficient, of if its pH lockout. either way, add more and hope the pH is ok...?

seems ass backwards to me, but yea.

Ok will do thanx a lot!

**Noximus** · 06-26-2012, 04:39 AM

Hey, can you help me narrow down this issue. I believed at first it was nute burn, but now i believe that it is a P or K defeciency. It starts on the youngest leves while the older growth seems unaffected. I am.using roots organic soil nutes are Subcools super soil.mix. two 600w hps cooled with a 465cfm fan. Average temps 75-80°. Plants still.grow pretty buds but at slower rate and with less yield since the fan leaves endup dead. Sugar leavez around buds are affected after top fan leaves die out. With old growth affected last??? leaves start like thisIMG_20120626_025403.jpg then start curling at the tips like thisIMG_20120626_025408.jpg then keep getting worse IMG_20120626_025415.jpg IMG_20120626_025455.jpg IMG_20120626_025548.jpg

**Jopse** · 07-01-2012, 10:26 AM

Need help bottom first set of true leaves r yellowing its 1 month and 5 days old since planted in soil after root has emerged from seed. Any tips for this first timer. This is hard!

Guide to Nutrient Deficiency or Toxicity

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