4wyo AK48, deficiency or nute burn?

Triplec

Triplec

Well-Known Member
I have a 4 week old AK48 that has some over all yellowing, slightly burnt looming tips and some brown spots sprinkled throughout. I have fed nothing but water until the fourth week. I gave her 1/2ml of grow per liter, which is half the dose for biobizz's chart for week 1, so it was a very low dose. I also did some topping last week and moved her from a 75w led ufo to a 135w led ufo. Currently the top of the plant is about 9 inches from the light. It was about 6 inches for a few days but thought it might be too close. Can you guys help me out? Below are the specs.

3 gallon pot
BioBizz light mix
Biobizz nute line
Temps: 80-82f
Light: 75w for 3 weeks, 135w for 1 week.
Fed water for the first 3 weeks, gave a low nute feeding in week 4.
 

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Lysergicpt

Lysergicpt

Well-Known Member
whats your temperature and humidity ?
i dont think you have any issue about nutrients or lack of it , i think your problem is in heat , humidity, or ventilation.
If your growth is not stunted , i wouldn't probably worry to much about it , just make sure you have good ventilation and humidity above 50% at this stage.
 
Triplec

Triplec

Well-Known Member
It's getting worse. Humidity is right around 50-55. Here are some pics. More yellowing and spotting. It seems like a deficiency to me, calmag? Indeed to water/fed today. I am going to go ahead and feed nutes with a little calmag unless anyone has anything else.
 

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Lysergicpt

Lysergicpt

Well-Known Member
Yes probably some cal mag , give her a foliar feed with it , and water with some of it , check your runoff ph next water , see how she respond's in about 7 days you should see some improv. Do not abuse on the calmag it can lock out others nuts .
 
Triplec

Triplec

Well-Known Member
Lysergicpt said:
Yes probably some cal mag , give her a foliar feed with it , and water with some of it , check your runoff ph next water , see how she respond's in about 7 days you should see some improv. Do not abuse on the calmag it can lock out others nuts .
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Thanks. I gave her a feed with 1ml grow, per liter for 3 liters. I have about 2ml of calmag. Water ph is 6.5, runoff PH is 5.9 and the runoff ppm is 912.
 
Triplec

Triplec

Well-Known Member
She's look looking too good. Kinda of droppy today. I also noticed the humidity is like 32%. Temp is 80f. Do I need to try and raise it? If so, any suggestions? Also, about foilar spary, I've never done that. Any good organic brands?
 

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Triplec

Triplec

Well-Known Member
So, I need to water tonight. Should I give her more feed or just go with water only? Maybe a little calmag in the water. On Saturday, three days ago, I gave her 2L water, 2ml grow, 3ml calmag (lowest dose on the bottle). She appears to be responding fairly well. The bottom leaves are dying off though. I did some LST on her this morning. Giving her a break for the day and was going to feed tonight.
 

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Bakatare666

Bakatare666

Well-Known Member
Triplec said:
So, I need to water tonight. Should I give her more feed or just go with water only? Maybe a little calmag in the water. On Saturday, three days ago, I gave her 2L water, 2ml grow, 3ml calmag (lowest dose on the bottle). She appears to be responding fairly well. The bottom leaves are dying off though. I did some LST on her this morning. Giving her a break for the day and was going to feed tonight.
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Sounds like your RH is a bit low, but a couple things I caught as I was skimming your posts........
One Ml/ liter isn't even a tsp/ gal.
What is the recommended on your nutes? Sounds like you're kinda weak to me just guessing, and she does look hungry.
Also, one thing I have done from the beginning, is to water until I have plenty of runoff-which varies depending how dry I let my plants get.
Doing it this way, I feel it better insures that I have ALL the soil wet, and also I've never had an issue with buildups and needed to flush.
As far as how much or how strong to foliar feed, IDK what yours says, but the stuff I use is 10% N, 10% Ca, and 1.1% Mg, and it says 1-2tsp per gallon to feed, but does not give a different ratio for foliar feeding, so if your is something similar, I would think it's OK to go about 1 tsp/ gal.
 
Triplec

Triplec

Well-Known Member
Bakatare666 said:
Sounds like your RH is a bit low, but a couple things I caught as I was skimming your posts........
One Ml/ liter isn't even a tsp/ gal.
What is the recommended on your nutes? Sounds like you're kinda weak to me just guessing, and she does look hungry.
Also, one thing I have done from the beginning, is to water until I have plenty of runoff-which varies depending how dry I let my plants get.
Doing it this way, I feel it better insures that I have ALL the soil wet, and also I've never had an issue with buildups and needed to flush.
As far as how much or how strong to foliar feed, IDK what yours says, but the stuff I use is 10% N, 10% Ca, and 1.1% Mg, and it says 1-2tsp per gallon to feed, but does not give a different ratio for foliar feeding, so if your is something similar, I would think it's OK to go about 1 tsp/ gal.
Click to expand...
I use all BioBizz products right now. I have pasted they like to their grow schedule below. I've grown with BioBizz enough now to know I have to start out real week cause the bio-grow will cause nute burn if I over feed. The bio-grow is 3-0-8. All of BioBizz measurements are ml per liter. http://www.biobizz.com/uploads/bestanden/3aef58a5-f168-4c67-90e5-f795080075c4
 
Triplec

Triplec

Well-Known Member
I have all the nutes in the line. I also use a product from them called all bio-heaven during veg.
 
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