Please Help! 3rd post trying to solve this "defeciency". (Pics)

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fuih8u

Member
So I've been at this for several months trying to figure out what is killing my plants. I've gotten some good feedback but have not been able to solve these issues.

I use Black Gold potting soil mixed with about 20% perlite.
GH General Organics nutrients added at half strength.
I use RO water plus GH organic cal mag added at full strength.
My temps are about 75 day 65 night.
I have good ventilation and plenty of light.
The organic nutrients I use say that ph-ing is not necessary but I have raised the nutrient water to 6.5 ph with no noticeable effect. The run off was about 6 ph.
I water them about once a week when the pots become dry and leaves droop slightly.

The first two pics are the plants in veg and the last is what the plants will look like at the end of flower.

bad1.jpgbad2.jpgbad3.jpg

The yellowing starts on the bottom leaves until complete necrosis then moves up the plant until everything is affected. It really gets worse during flowering. It looks to me like a severe magnesium deficiency amongst other things but adding cal mag doesn't seem to fix it. I'd love to hear what you guys think this might be.
 
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spliffbuddy

Active Member
Ok, what lights are you using at seedling and distance, what lights and distance during veg, same for flowering period. If the water your putting in is 6.5 and its coming out at 6 have you checked the PH of your soil, may be too hot for seedlings and this may cause lock out/issues throughout your grow. Temps are ok, not familiar with your nutes so you could be burning them, did you try giving less, and when did you start giving? What were they like as seedlings/ when did issues start? Oh and what strain are they.
 
G

GrowersWarehouse

Member
fuih8u said:
So I've been at this for several months trying to figure out what is killing my plants. I've gotten some good feedback but have not been able to solve these issues.

I use Black Gold potting soil mixed with about 20% perlite.
GH General Organics nutrients added at half strength.
I use RO water plus GH organic cal mag added at full strength.
My temps are about 75 day 65 night.
I have good ventilation and plenty of light.
The organic nutrients I use say that ph-ing is not necessary but I have raised the nutrient water to 6.5 ph with no noticeable effect. The run off was about 6 ph.
I water them about once a week when the pots become dry and leaves droop slightly.

The first two pics are the plants in veg and the last is what the plants will look like at the end of flower.

View attachment 2887162View attachment 2887170View attachment 2887175

The yellowing starts on the bottom leaves until complete necrosis then moves up the plant until everything is affected. It really gets worse during flowering. It looks to me like a severe magnesium deficiency amongst other things but adding cal mag doesn't seem to fix it. I'd love to hear what you guys think this might be.
Click to expand...
http://www.ncagr.gov/agronomi/pdffiles/essnutr.pdf

Here's a link that goes over the essential minerals what they do and how to identify deficiencies. If you are using a nutrient that contains everything the plant needs,which you are, just raise the base up. General Organics needs to be used at about 1.5 times the recommended rate to achieve desirable results. I'm not a big fan of General Organics.
 
lips

lips

Well-Known Member
try some epsom salt. 1 t per gallon of water. I know you already used cal mag.
 
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plaguedog

Active Member
smokegreenshlt said:
Is ur pH meter calibrated correctly?
Click to expand...
No need to pH with General Organic line. Look it up. I noticed you said you wait until the leaves are drooping and then you water? Not a good idea, especially when you are using an organic line. The whole wet/dry cycle has been blown WAY out of proportion on pot forums. Contrary to popular forum myth, your soil should always be moist with a peat base mix, and using organics to "feed the soil". When you switch to flower be sure to use the Bio-Grow for the first couple weeks, as the stretch needs nitrogen (again popular to pot forum myth) for this vigorous growth period.

I'm not a big fan of the general organics line either, I tried it on a few plants with less than desirable results. Like Growers Warehouse said, you need to use that line at the heavy suggested feeding in my experience.(2 TBS per gallon of the Grow during veg and transition/Bloom and I did it every watering)

In summary, don't let the pots completely dry out, ever, and use more of the nutrient with that line.
 
RedWhiteBlueGreen

RedWhiteBlueGreen

Well-Known Member
I dunno for sure, but from what u say & how u seem to have it set-up well, my only thought would be maybe something else is getting in ur RO water?? Do u give that water to other plants/garden plants, etc and they're fine? I might be totally off kilter but possibly it needs filtering too? Maybe some metals are in there that its not liking?

Otherwise than that, the only thing i'd say to maybe help for next time, is when they get chopped, dig up the roots & check how well they formed & how healthy they looked, and if any damage or bugs on them, etc. Probably won't be anything bad but i find its always interesting to look. Very best of luck sorting it anyway dude.
 
Cpappa27

Cpappa27

Well-Known Member
Mine did that but I didn't let them get that far out of control. It was nute lockout from a super low ph. I brought it up to about 6.5 and they started thriving within a couple days. Nute lockout is like trying to eat mash potatoes through a straw. Fix the ph man. Good luck
 
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plaguedog

Active Member
Fix the pH my ass. You're not feeding them enough if they start to yellow from the bottom up. You said it yourself, your feeding half strength through flower? Have you ever tried bumping them up before they get to that point?
pH rarely has anything to do with an organic grow, or most non hydro applications. Try feeding the bitches more next time and see what happens. Like I said, I had to use the heavy feeding schedule when I tried GO briefly, and I still wasn't impressed with it.

Hmm on further view of the white spots, you are sure there are no bug problems? Root aphids?
 
lilroach

lilroach

Well-Known Member
I agree with you need to go full strength with the nutes. I used to use General Organics and considering the age of you plants, I would have gone full strength with the GO's cocktail from the starter box.
 
F

fuih8u

Member
plaguedog said:
Fix the pH my ass. You're not feeding them enough if they start to yellow from the bottom up. You said it yourself, your feeding half strength through flower? Have you ever tried bumping them up before they get to that point?
pH rarely has anything to do with an organic grow, or most non hydro applications. Try feeding the bitches more next time and see what happens. Like I said, I had to use the heavy feeding schedule when I tried GO briefly, and I still wasn't impressed with it.

Hmm on further view of the white spots, you are sure there are no bug problems? Root aphids?
Click to expand...
I have given them recommended dosage before and still had problems. I will try "Heavy Feeding" for the rest of this cycle then I'm gonna ditch G.O. completely. What do you use/recommend?
I have no bug problems... that I can find.
 
keysareme

keysareme

Well-Known Member
fuih8u said:
I have given them recommended dosage before and still had problems. I will try "Heavy Feeding" for the rest of this cycle then I'm gonna ditch G.O. completely. What do you use/recommend?
I have no bug problems... that I can find.
Click to expand...
Nectar For The Gods (blue moon Organics in Oregon)
 
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