Lockout or underfeeding?

oill

Well-Known Member
Hydro dtw in rockwool
In week 6 veg
Ph 6.0
Ec 1.5
Atami bcuzz a b
And some silic boost

Plants are yellowing a d some brown spots.

Please help, I never know if this is over or under feeding
 

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paz87

Well-Known Member
put an actual picture of the plant, also ph 6 is low in my opinion try to keep it more up 6.4 - 6.8. if pH lowers into acidity to less than 6 the roots are not able to access phosphoric acid, calcium, and magnesium because they lose their solubility.
 

Blitz35

Well-Known Member
put an actual picture of the plant, also ph 6 is low in my opinion try to keep it more up 6.4 - 6.8. if pH lowers into acidity to less than 6 the roots are not able to access phosphoric acid, calcium, and magnesium because they lose their solubility.
He's growing in rockwool, not soil! Don't mislead him with that advice! Ph is perfect at 6.0! Also, plants don't take up phosphoric acid! Maybe read some more before offering blind/wrong advice lol.
 

Bernie420

Well-Known Member
Hydro dtw in rockwool
In week 6 veg
Ph 6.0
Ec 1.5
Atami bcuzz a b
And some silic boost

Plants are yellowing a d some brown spots.

Please help, I never know if this is over or under feeding
what are your roots looking like and the water temp.

Plants are hell of mag deficient. lower ec to 1.3 pik off all the really yellow leaves. add hydroguard what light
 

oill

Well-Known Member
what are your roots looking like and the water temp.

Plants are hell of mag deficient. lower ec to 1.3 pik off all the really yellow leaves. add hydroguard what light
Vero 29 3000k and some hlg 288 at 3k

Room temp is about 27c to 32c.

Also... I doudt its root rot. I am using rockwool 1cm chunks.

I water for 30 seco ds 2 x a day and get run off. I think it's probably overfeeding.

I have taken ec to 1.0 and added calmag solution. Recalibrated ph pen which was reading 7.3 in 7. So maybe I was lowering ph too much. We'll see.
 
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oill

Well-Known Member
He's growing in rockwool, not soil! Don't mislead him with that advice! Ph is perfect at 6.0! Also, plants don't take up phosphoric acid! Maybe read some more before offering blind/wrong advice lol.
I knew when he said 6.8 we were speaking a different language
 

coreywebster

Well-Known Member
Vero 29 3000k and some hlg 288 at 3k

Room temp is about 27c to 32c.

Also... I doudt its root rot. I am using rockwool 1cm chunks.

I water for 30 seco ds 2 x a day and get run off. I think it's probably overfeeding.

I have taken ec to 1.0 and added calmag solution. Recalibrated ph pen which was reading 7.3 in 7. So maybe I was lowering ph too much. We'll see.
Yeah I think your overfeeding at 1.5 ec in veg.
However, what distance are the lights from the plants? How much wattage over how big a space?
 
Looking at this didnt really help. I think I have manganese def due to overfeeding.
I don’t understand how that didn’t help you. But I will say this. Go back and check the charts again because there was at least one condition that would cause manganese lockout.

I don’t know pictures of the different conditions both excess and deficient with pictures AND descriptions. It doesn’t get much better than that other than having a botanist or experienced grower in your ops to actually tell you what’s wrong.
 

Bernie420

Well-Known Member
Vero 29 3000k and some hlg 288 at 3k

Room temp is about 27c to 32c.

Also... I doudt its root rot. I am using rockwool 1cm chunks.

I water for 30 seco ds 2 x a day and get run off. I think it's probably overfeeding.

I have taken ec to 1.0 and added calmag solution. Recalibrated ph pen which was reading 7.3 in 7. So maybe I was lowering ph too much. We'll see.
whats the ph of the water
 

Bernie420

Well-Known Member
Vero 29 3000k and some hlg 288 at 3k

Room temp is about 27c to 32c.

Also... I doudt its root rot. I am using rockwool 1cm chunks.

I water for 30 seco ds 2 x a day and get run off. I think it's probably overfeeding.

I have taken ec to 1.0 and added calmag solution. Recalibrated ph pen which was reading 7.3 in 7. So maybe I was lowering ph too much. We'll see.
did you look
 
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