Is this a manganese problem?

zracer

Member
Hi all, i am looking for someone in the know to take a gander at my plants. I use an ebb flo system with hydroton. using gh nutes. ph is checked and adjusted daily using drops. I change the water weekly. They are roughly 4 weeks old from bagseed. The really small ones were small from the start and were longshots.

The problem started on the plant with cut leaves 2 weeks ago. started on one leaf set near the bottom and moved its way up the plant. new growth doesnt show it. the other plant started showing it a week ago. now i have one more that is showing early stages of it, this one has been growing good and dont want to lose it. temps and humidity are pretty good i think. disregard the low temp on the thermometer.

i researched and i think its manganese, can anyone tell me if im right?
 

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