Nute burn...with no nutes..or what

B

Bullmark

Well-Known Member
Hello, I’m trying a couple of autos under a HLG 320. FFOF only, started in cups and moved to 3gal fabrics. I was running the light at full power and 22”. The growth was slow and I was advised to raise the light and lower the intensity, which I did. The plants seemed to like it....and there were no real issues, other than very short bushy plants. But recently I spotted bright yellow tips on one leaf and few others look to be trending in that direction.
I don’t see any pests and it doesn’t make sense for light burn after raising the height and lowering the intensity.
Could it be nute burn, although I’ve only given distilled water?? Maybe the roots are just finding the newer soil and it’s too hot??
What should i do??
And how will I know when the soil has used all of its existing nutes??
thanks for the help...I need all I can get.C992C72C-38E0-4690-8B84-45411AE66586.jpeg
 
go go kid

go go kid

Well-Known Member
you will know when the soil has run out of food as the bottom leaves wil turn yellow and die, this is the large first set of true leaves.
 
B

Bullmark

Well-Known Member
Minbebistillmax said:
Are you using hp 8.3 for watering the plants?.
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No I’m using distilled water. I was just saying that my tap water was 8.3.
I think I may get some cal/mag and add a tiny bit to the next watering....do u think it’s a good idea? And would 1/4 or 1/8 of a suggested ratio be a good conservative start?
 
B

Bullmark

Well-Known Member
Hollatchaboy said:
The burnt tips could be a sign of under watering. As the moisture levels in the soil drop, the nute level increases due to not being as diluted.
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I see....I’ve been so paranoid about over watering....but it could be. It’s due to be watered today or tomorrow. The last watering was heavy....there was a lot of runoff.
Regardless, I don’t think a very small hit of cal mag would hurt it....or would it ??
u gotta understand, I had to cheat to get a D in freshman biology yrs ago in college. So I don’t usually excel at these types of projects.
 
Hollatchaboy

Hollatchaboy

Well-Known Member
Bullmark said:
I see....I’ve been so paranoid about over watering....but it could be. It’s due to be watered today or tomorrow. The last watering was heavy....there was a lot of runoff.
Regardless, I don’t think a very small hit of cal mag would hurt it....or would it ??
u gotta understand, I had to cheat to get a D in freshman biology yrs ago in college. So I don’t usually excel at these types of projects.
Click to expand...
If you're trying to do a water only, living soil, then water 5-10% water to soil volume. Meaning, 10 gallons of soil, you would only water 1/2 - 1 gallon. If you plan on watering in bottled nutes, water to ~20% runoff.
 
Hollatchaboy

Hollatchaboy

Well-Known Member
Bullmark said:
I see....I’ve been so paranoid about over watering....but it could be. It’s due to be watered today or tomorrow. The last watering was heavy....there was a lot of runoff.
Regardless, I don’t think a very small hit of cal mag would hurt it....or would it ??
u gotta understand, I had to cheat to get a D in freshman biology yrs ago in college. So I don’t usually excel at these types of projects.
Click to expand...
I don't see a C or Mg deficiency.
 
C

coco87769

Member
Bullmark said:
Hello, I’m trying a couple of autos under a HLG 320. FFOF only, started in cups and moved to 3gal fabrics. I was running the light at full power and 22”. The growth was slow and I was advised to raise the light and lower the intensity, which I did. The plants seemed to like it....and there were no real issues, other than very short bushy plants. But recently I spotted bright yellow tips on one leaf and few others look to be trending in that direction.
I don’t see any pests and it doesn’t make sense for light burn after raising the height and lowering the intensity.
Could it be nute burn, although I’ve only given distilled water?? Maybe the roots are just finding the newer soil and it’s too hot??
What should i do??
And how will I know when the soil has used all of its existing nutes??
thanks for the help...I need all I can get.View attachment 5024990
Click to expand...
thats not fertilizer burn at all its showing that the elements are reaching to the end of the leaves.. fertilizer burn occurs along the length of the leaf.your ph at root zone should be between 6-6-2
 
C

coco87769

Member
coco87769 said:
thats not fertilizer burn at all its showing that the elements are reaching to the end of the leaves.. fertilizer burn occurs along the length of the leaf.your ph at root zone should be between 6-6-2
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if that is soiless mix its to dry the idea with soiless mix is tomaintain the correct moisture
 
xtsho

xtsho

Well-Known Member
My tap water is treated to be pH 8.2. I use it straight from the tap when growing in soil and have for years. Including FFOF. If you look on the label it says oyster shell for pH adjustment. The soil can deal with the pH of your water. It would be different if you were growing hydro or soilless like coco or promix. That's the nice thing about growing in soil. People tend to get too hung up on their waters pH when growing in soil and can actually cause problems trying to fix something that doesn't need to be fixed.


"Portland's water is currently treated to be at a pH of 8.2. The pH of Portland's water can vary by a small amount in the distribution system, but it generally ranges from about 7.4 to 8.4, with a median value of 7.8 to 8.1."
 
Hollatchaboy

Hollatchaboy

Well-Known Member
xtsho said:
My tap water is treated to be pH 8.2. I use it straight from the tap when growing in soil and have for years. Including FFOF. If you look on the label it says oyster shell for pH adjustment. The soil can deal with the pH of your water. It would be different if you were growing hydro or soilless like coco or promix. That's the nice thing about growing in soil. People tend to get too hung up on their waters pH when growing in soil and can actually cause problems trying to fix something that doesn't need to be fixed.


"Portland's water is currently treated to be at a pH of 8.2. The pH of Portland's water can vary by a small amount in the distribution system, but it generally ranges from about 7.4 to 8.4, with a median value of 7.8 to 8.1."
Click to expand...
I don't think that people understand that growing in soil, especially a living soil, that the microbes adjust the ph to their, and the plants, liking. If you had a crazy ph value like 2.3, or 10.2, then I would probably adjust it some.
 
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