HELP LEAVES TURNING YELLOW

Smokeythebear1100

Active Member
woke up this morning to one of my planra having yellow marks along the edge of the leaf can someone help me out I don’t want the plant to die.
 

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What are your conditions? Heat light ph airflow humidity???????

temp 75-82
Light sf2000 with a 100w burple
Using ocean forest so soil is balanced to 6-6.8
I feed reverse osmosis water I don’t check the ph just add calmag no nutes yet. I got 1 big fan 2 clip ons and a 4 inch vent system
Humidity is around 45-60
 
Man buy Ph pen and water with correct ph.

To me it looks like magnesium deficiency but not sure.

What calmag and how much are you using? Have you tried to spray on leaves?
 
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