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Sick Plant still the same plant as before, i am leaning towards calcium deficiency or iron excess


ghostdog
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Geraniol
Joined: 2 months ago

it is a rdwc with 4 plants and only one is showing this on lower leaves, the new ones are perfect and the growth is just slightly slower of the others

Grow Medium
Hydro (water)
Grow Light
led 120w with lm301b diods and a 240w of same type
Temperature C/F : (Light on/off)
25.4c/25.4c
Humidity
43
Picture of Problem
IMG_20210410_094858 - Copia.jpg
Nutrients

advanced hydroponics micro
advanced hydroponics bloom
advanced hydroponics grow

pH Level
5.9
EC / PPM / TDS of Feed

1.383 ec slightly falling

Feed Frequency
rdwc with weekly res change
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ghostdog
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Geraniol
Joined: 2 months ago

the picture was one week old this is a more recent one

IMG 20210427 184028   Copia

 

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Macky
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Beta-Pinene
Joined: 2 years ago

can we get a pic of the whole plant mate? Where on the plant is this leaf?

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ghostdog
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Geraniol
Joined: 2 months ago

for sure you can, sorry did not know it was required, it is a lower leaf, i have marked it in red. the other leaves and the other 3 plants do not show this issue

IMG 20210427 214920   Copia
IMG 20210427 214953   Copia

 

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WoodI2
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Joined: 10 months ago

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Pirate, no country
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Linalool
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@ghostdog, hey again. Here's some basic 101 stuff you probably already know but helps to revisit sometimes.

Mobile elements:  nitrogen, phosphorous, potassium, magnesium, and zinc. Typically develop visual deficiencies in older leaves.

Immobile elements: Sulphur, calcium, iron, manganese, chlorine, boron, copper, molybdenum, sodium, silicon, and cobalt on the other hand develop deficiencies in younger leaves first and progress down. 

Bacteria: that inhibits a plants growth are surprisingly common. The plant itself might show symptoms of many different deficiencies at once, this is because the bacteria is obstructing and/or consuming nutrients that the plant needs. Symptoms may include PH dropping or rising more than 1 within 12 hours. 

I like the visual charts too, hope this helps.     peace

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Rufio
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Caryophyllene
Joined: 7 months ago

If that’s the only area affected could it be how close it is to the reflective material? When my tent was full the first leaves to go “off” looking were touching the sides. 

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