Can Anyone Identify the Problem in This Pic?

Hey guys once again I need your genius. Come home and check on the plants and all look great except one which looks like this.




Any help is greatly appreciated. Lets get the brainstorming going.

far away pic, but looks like I can see spots that signify a magnesium deficiency. how old r the plants, r u checking ur ph, & r u using nutes yet, & specifically any calmag type ones????

maybe u gave it too much water like everyone else with this problem how much water does a 2 inch plant need???

wayno30 said:

maybe u gave it too much water like everyone else with this problem how much water does a 2 inch plant need???

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wtf is wrong with people tonight. hey wayno....u posting on the right thread? u high? did deltsy post something somewhere else ur referring to here? because ur reply makes no sense WHATSOEVER...just like these plants dont show signs of overwatering WHATSOEVER.

What kind of soil is it in? Were they recently tranplanted? Maybe the soil is whack. If you transplanted recently they might just be getting used to their new home. I'd hit it with some distilled and a LIGHT dose of high N organic fertilizer and a LIGHT (1ML per gal) dose of cal-mag. Give em an organic foliar spray too. That never hurts anything.

PH may or may not be an issue, but I wouldn't worry about it too much. Just make sure that the water going in is PH'd right. To be on the safe side, I use distilled or rainwater for the first month at least. After that, treated and PH'd tap. In my experience and opinion, when it comes to soil PH and marijuana, it's not so much the PH number, but keeping the PH consistent. If it's a little high, then as long as it stays a little high and doesn't fluctuate all the time, the plant will be okay. Dope plants in general seem to adapt well to whatever soil or environment their in as long as it's not TOO extreme.

Doesn't look too bad yet whatever it is. If it starts spreading badly then I'd get concerned. Otherwise just let it grow.

white strain ? dont push on ferts , it may need just some more micronutrients than the typical non white strains

i love the post like this were the plants like 3 inch tall and there freaking out there's a spot cracks me up evetime ...but arnt those to leaves the first leaves "not true leaves" arnt the suppsoed to wither and die off at some point ?

billy4479 said:

i love the post like this were the plants like 3 inch tall and there freaking out there's a spot cracks me up evetime ...but arnt those to leaves the first leaves "not true leaves" arnt the suppsoed to wither and die off at some point ?

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yes but not at this point, and not in this way

and yes the spots indicate an anomaly, a problem. it could stunt growth and needs to be mended. no need for hysteria but not apathy either.

yellowing is the natural prosces and as already stated not that soon

I understand the question is asked a lot. and yes I am kind of freaking out here but it is also my first grow ever and as all people their first time they would like it to be a success. If im doing something wrong on the first one i don't want to do it again on the second grow. As for soil Im using a pro mix from northernlightshydroponics as well as their line of nutrients. I know a lot of a successful growers that swear by their stuff locally. Its definitly something im doing wrong and unfortunitly I cant blame my supplies.

ya i wouldnt worry about it too much. in most situations, a flush or quick leaching, then a light feeding does the trick. unless that starts to move up on different leaves, i would say try not to worry. being that its your first grow, it will be a hard thing to do. in any case if it does progress, fix one thing at a time. if u think it is nute burn? then flush, and give it a day or two. dont try and fix everything at once, then youll never know what actually fixed it, and what the problem really is.

i have been giving them nutes but only a quarter what it says to use and i figured at 4 weeks is switch to half strength then at 6 weeks id go full strength and last week flush.

Stomata said:

In my experience and opinion, when it comes to soil PH and marijuana, it's not so much the PH number, but keeping the PH consistent. If it's a little high, then as long as it stays a little high and doesn't fluctuate all the time, the plant will be okay. Dope plants in general seem to adapt well to whatever soil or environment their in as long as it's not TOO extreme.

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Going strictly on personal experience, I'd have to agree bro. On my last grow ph was 7.2, but it stayed 7.2 so everything turned out fine. The one before that was a fucking disaster because I kept trying to dial in 6.5 It never got above 7 or below 6, but was everywhere in between and the plant suffered constantly. Now I add lime, ph water/nutes and that's about it. I don't even check soil ph unless I start seeing problems. I think ph is definately important, but I agree that it seems to be more about just keeping it stable.

I do use the liquid testing kit for ph and keep it at a constant 6. no fluctuation. also when I do a big container of water i test it again and again every time i draw from it. Maybe I'm just stressing over everything. I think I should just let them do their thing.

how about providing a closer pic, especially of the affected leaves? I think u can start by raising ur ph, at least to 6.5; its a bit low for soil.

Deltsy85 said:

i have been giving them nutes but only a quarter what it says to use and i figured at 4 weeks is switch to half strength then at 6 weeks id go full strength and last week flush.

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Why don't you ask all the dudes taht use those nutes how to use them. Promix has NO NUTRITION AT ALL in it . NEVER. none.
You have to give your plant every bit of food through water soluble nutrients.

You need to learn about water chemistry and nutrients.

Find experts using the same nutes you do and follow their lead. I don't think anyone says to use 1/4 stength nute with the ambition of one day going up to half before flushing!>!?!

What are you going to flush out? You barely put anything in there the whole duration of the grow? To flush, there must be something to flush. For there to be something to flush, you have to let it accumulate in the soilless mix.. Feeding so lightly will not result in salt buildup sufficient to warrant flushing, in my opinion.

tommy

Ill take your advice on raising the ph to 6.5 and your right the promix has no nutrients at all. As a rookie grower i've been afraid to add too many nutrients and getting nute burn. Like I said certain things I'm finding out as I go along and I appreciate all the information because it saves me from making the same mistakes twice. As far as a closer pic ill take one in the next couple minutes for you guys.

Hope these help guys. Also again its only the 1 plant that looks like this. The rest look good.

Deltsy85 said:

Ill take your advice on raising the ph to 6.5 and your right the promix has no nutrients at all. As a rookie grower i've been afraid to add too many nutrients and getting nute burn. Like I said certain things I'm finding out as I go along and I appreciate all the information because it saves me from making the same mistakes twice. As far as a closer pic ill take one in the next couple minutes for you guys.

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I am kinda wrong depending on which promix you use.
Promix BX with MycorisePro does have dolomitic lime, micronutrients, mycorrhizae, etc. The lime is in there so it can work itself out.
Maybe try NOT messing with your source water if you don't understand water chemistry, pH, and fertilizers.

This is a hydroponic growing medium. it is soilless.. The ruls for growing in this should be more hydro-based. You can call premier horticulture and ask them if you should be feeding pH 6.5 nutrients. They will say HELL NO. At pH above 6.5, your nutrient solution becomes unstable. this is a fact of life. Above 7 and you fuck up your solution completely.

Unless you understand the chemicals you are using to raise and lower pH, WHY they work, WHAT nutrients they are adding, etc., you should be really chill on adjusting pH.. lower is better. Lower is always better.. Look at the chart that shows which nutrients are avaiable at which pH... Lower pH is better for absorption of most of the macronutrients...


tommy

her is the infor on promix bx:

CHEMICAL CHARACTERISTICS:
PRO-MIX 'BX' with MycorisePRO contains a balanced nutrient charge to promote initial plant development. During the course of crop
production, it is necessary to initiate a fertilization program. The program selected should consider water nutrient content, crop type and
stage of plant development. Begin fertilization within 7 days after planting and maintain fertilizer applications throughout the course of
crop production. To insure plants receive proper nutrition, it is advisable to periodically analyze nutrient content of fertilizer solution,
growing media and plant tissue to insure proper levels of nutrients are maintained throughout the crop cycle.
pH Range: 5.2 - 6.2 (S.M.E.)
pH Incubated: < 6.2 after 7 days saturation (S.M.E.)
Electrical Conductivity: 1.0 &#8211; 1.8 mmhos/cm (S.M.E.)

***Look- even they show 6.2 as what they are shooting for once the soiless medium is wetted down..

I just checked the grow medium and its pro-mix HP. As well I phoned and double checked with northern lights hydroponics and they said with that soil and their nutes that a ph of 6.0 is ideal. which leaves the test strip a urine yellow colour. Ive managed to maintain that so Im wondering if the problem is even ph or nute related. Everything recommended is exactly as they say. It was also my mistake when I said i was doing 1/4 of recommended nutes it turns out i was doing half. I got what was written on the bottle confused. So i have been giving them half nutes and at week 4 they will be given full strength until completion obviously with a flush before harvest. So again im really at a loss as to what is causing the deformation of the leaf on the one plant.