Is there a doctor in the house?

sens1

sens1

Well-Known Member
What's the issue here? looking for suggestions to this little problem with a plant (attached image). it's been like this for a week, I have flushed and have since ramped up the nutes. some fan leaves are yellowing from the tips but the veins remain green.

conditions:
Hydro grow
Day 24 of 12/12
400w HPS (12" - bit too close but I can't get more height)
Nutes: 1100ppm before flush, 1800ppm now
PH 6.0

it looks like maybe sun bleaching or lack of nutes but the plant is at full strength so I'm hesitant to add more. I'm not too concerned at this point but please if anybody knows what's going on here I'm all ears.

thanks!
 

Attachments

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DR. VonDankenstine

Well-Known Member
sens1 said:
What's the issue here? looking for suggestions to this little problem with a plant (attached image). it's been like this for a week, I have flushed and have since ramped up the nutes. some fan leaves are yellowing from the tips but the veins remain green.

conditions:
Hydro grow
Day 24 of 12/12
400w HPS (12" - bit too close but I can't get more height)
Nutes: 1100ppm before flush, 1800ppm now
PH 6.0

it looks like maybe sun bleaching or lack of nutes but the plant is at full strength so I'm hesitant to add more. I'm not too concerned at this point but please if anybody knows what's going on here I'm all ears.

thanks!
Click to expand...
Always hard to tell from picts but it looks like a few problems--couple of questions-----Why is your ph6? your in hydro right?----what is the temp of the room----what is the humidity-----what is your res temp?------what is your water source? what is the nutes you are giving them?
 
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eclipsepers0n

Well-Known Member
it might be overwatering... i went to 2 different home depots and asked them about yellowing leaves for any plants, and they told me yellow means overwatering, brown means underwatering.
 
sens1

sens1

Well-Known Member
DR. VonDankenstine said:
Always hard to tell from picts but it looks like a few problems--couple of questions-----Why is your ph6? your in hydro right?----what is the temp of the room----what is the humidity-----what is your res temp?------what is your water source? what is the nutes you are giving them?
Click to expand...
yes i'm in hydro.
ph6 is what I thought was best, what do you suggest?
temps are 23-28clecius (around 77f)
humidity is ambient depending on weather 50-70%ish
res temp 21c (70f)
nutes are plantastic Plantastic 5L Bloom A+B Set - eBay, Other Gardening, Lawn Care, Gardening, Lawn Care, Home. (end time 24-Jun-08 16:18:32 AEST)
water source is tap water that I let stand in an open-air holding tank 48hrs


also:
growing in clay balls, top fed for 15min/hr
strain is wonder woman
 
Lord Dangly Bits

Lord Dangly Bits

Well-Known Member
Holy Shit!!!!! 1,800 PPM after flush?? Some strains like 900 PPM some like 1,600. Some can live at 1,800. Why are you thinking they need more nuts?

The Strain TrainWreck I grew in one of my journals did not like high nuts at all, I started at 400 ppm and build to 980 in the end and they did fantastic.


Maybe think of lowering the PPM, and also get that PH down to about 5.6-5.8.






sens1 said:
What's the issue here? looking for suggestions to this little problem with a plant (attached image). it's been like this for a week, I have flushed and have since ramped up the nutes. some fan leaves are yellowing from the tips but the veins remain green.

conditions:
Hydro grow
Day 24 of 12/12
400w HPS (12" - bit too close but I can't get more height)
Nutes: 1100ppm before flush, 1800ppm now
PH 6.0

it looks like maybe sun bleaching or lack of nutes but the plant is at full strength so I'm hesitant to add more. I'm not too concerned at this point but please if anybody knows what's going on here I'm all ears.

thanks!
Click to expand...
 
molson4canadian

molson4canadian

Active Member
Plants that are that yellow... probably too much nitrogen. Just give them straight water for a week or so. let the soil dry slightly between watering.
 
NewGrowth

NewGrowth

Well-Known Member
It looks only high up how close are the lights? You could be right about the bleaching the lower new growth on the other bud sites looks healthy
 
Lord Dangly Bits

Lord Dangly Bits

Well-Known Member
NewGrowth said:
It looks only high up how close are the lights? You could be right about the bleaching the lower new growth on the other bud sites looks healthy
Click to expand...
Say What?

Why do so many people think that if there is trouble add more NUTS? 1,800 PPM after flush is a crazy high number for a newbie grower. New growers should always keep the PPM lower. But to each his own.
 
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DR. VonDankenstine

Well-Known Member
As LDB said " lower the ppm----try 1200/ get the ph down"--

There is a sign of nute burn on the bottom right cola---Look close and you can see the dark brown hairs and bud.
 
NewGrowth

NewGrowth

Well-Known Member
DR. VonDankenstine said:
As LDB said " lower the ppm----try 1200/ get the ph down"--

There is a sign of nute burn on the bottom right cola---Look close and you can see the dark brown hairs and bud.
Click to expand...
Yeah I see it too lower the strength to the point it was at before the damage started to occur:peace:
 
sens1

sens1

Well-Known Member
thank

lol everyone on another forum said to add MORE nutes when asked at around 1200ppm and that it looked like the buds were simply drawing nutrients from the fan leaves surrounding the buds to provide the buds with what the need to grow, that's why I went so high. I know it's way strong.. this strain is supposed to like high EC levels though so I thought I'd try it... it did seem to improve though, however the problem is still there. (btw I gradually went to 1800 after the flush starting back at 1100)

there may be some nute burn here and there but the overall problem doesn't look like burn, it looks more like a deficiency or possibly an excess that's causing lock out.
 
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DR. VonDankenstine

Well-Known Member
sens1 said:
thank

lol everyone on another forum said to add MORE nutes when asked at around 1200ppm and that it looked like the buds were simply drawing nutrients from the fan leaves surrounding the buds to provide the buds with what the need to grow, that's why I went so high. I know it's way strong.. this strain is supposed to like high EC levels though so I thought I'd try it... it did seem to improve though, however the problem is still there. (btw I gradually went to 1800 after the flush starting back at 1100)

there may be some nute burn here and there but the overall problem doesn't look like burn, it looks more like a deficiency or possibly an excess that's causing lock out.
Click to expand...
You could have had some lockout because you ran your ph too high--the problems wont go away overnight---you need to use a balanced nute feed with a lower than 1800ppm---if it was me I would go 1250----your ratio's might be off as well.
 
sens1

sens1

Well-Known Member
Thanks for the feedback guys, I've dropped my ppm to 900 and Ph to 5.8, will run like that for a week and see how it goes.

You could have had some lockout because you ran your ph too high--the problems wont go away overnight---you need to use a balanced nute feed with a lower than 1800ppm---if it was me I would go 1250----your ratio's might be off as well.
Click to expand...
1It did cross my mind that the ratio's might be off.. hopefully not... recommend optimal ratio?

What is the ppm of your tap water?
Click to expand...
30ppm

Is Ph6 really that high? 5.8 is the recommended and a 0.2 variation isn't that big.
 
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DR. VonDankenstine

Well-Known Member
sens1 said:
Thanks for the feedback guys, I've dropped my ppm to 900 and Ph to 5.8, will run like that for a week and see how it goes.


1It did cross my mind that the ratio's might be off.. hopefully not... recommend optimal ratio?


30ppm

Is Ph6 really that high? 5.8 is the recommended and a 0.2 variation isn't that big.
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Your in flowering so you don't need that much nitrogen----just enough to keep those leafs green until you start your flush----if 30 ppm is your tap water part of the problem is you need more cal/mag---my RO water is 17 and I add full strength cal/mag with every water. Your right----.2 is not that much but your not looking at the variance-your looking at the range that certain nutes get locked out at----you should be 5.6 to 5.8(also being able to rule out certain things and not second guess yourself will help you resolve your problems faster---process of elimination.) what is the npk of part A?--------npk of part B?.
 
Lord Dangly Bits

Lord Dangly Bits

Well-Known Member
You know, I have not seen what type of nuts he is useing. I am useing an organic Nut, and the range for ppm is 500 at beginning and 800 MAX at 5 weeks. Not all nuts are supposed to be at 1200-1800 PPM.
 
sens1

sens1

Well-Known Member
DR. VonDankenstine said:
Your in flowering so you don't need that much nitrogen----just enough to keep those leafs green until you start your flush----if 30 ppm is your tap water part of the problem is you need more cal/mag---my RO water is 17 and I add full strength cal/mag with every water. Your right----.2 is not that much but your not looking at the variance-your looking at the range that certain nutes get locked out at----you should be 5.6 to 5.8(also being able to rule out certain things and not second guess yourself will help you resolve your problems faster---process of elimination.) what is the npk of part A?--------npk of part B?.
Click to expand...
please see attachment for nutrient analysis (A part and and B combined analysis)


What does the lable say per gallon for part A/ part B in veg?


What does the lable say per gallon for part A/ part B in flow?
Click to expand...
"For heavy growth plants demanding a strong nutrient solution add 15-20mL per 4L water..." I was running at about 40mL/15L is around 1000ppm
 

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Last edited:
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DR. VonDankenstine

Well-Known Member
sens1 said:
please see attachment for nutrient analysis (A part and and B combined analysis)


"For heavy growth plants demanding a strong nutrient solution add 15-20mL per 4L water..." I was running at about 40mL/15L is around 1000ppm
Click to expand...
From what I can tell your nutes have all the right stuff in them but the ratio's are off for the bloom cycle---from what I gather your A + B nutes is close to ---2/.5/5---this is ok for veg but as I said in an earlier post the nitrogen is to high and phos is way to low.. If it was me I would have 2 choices----1. mix the nutes you have as directed then add a high phosphate additive then bring down your ppm's by adding more h2o till you hit desired level(I would shoot for 1250ppms for a couple of weeks). 2. change your nutes( I'm surprised the company didn't give you a flowering dose that was different from the "HEAVY GROWTH DOSE"?.
 
sens1

sens1

Well-Known Member
it's actually a flowering nute, I have 2 sets, one veg (a+b), and one flower(a+b).. the label pictured in attachment above is for the flower nutes. both sets spec the same dosage but have different nutrient analysis. the P does seem low I'll chuck in some PK13/14 to suppliment my nutes I guess
 
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