Any idea what this discoloration is?

[Motogurl]

Soil, gh nutrients, ph 6.5
Plants barley make it to harvest and are 1/4 the weight. Thanks

 

[Red Eyed]

Honestly, it looks like a variegated plant.

 

[LilViking]

Is this happening on the lower leaves first? If so could be leaf septoria. Comes in many forms. Could be a fungus. Usually lessens harvest weight by a lot too. I would look at that but not 100% sure

 

[Motogurl]

Is this happening on the lower leaves first? If so could be leaf septoria. Comes in many forms. Could be a fungus. Usually lessens harvest weight by a lot too. I would look at that but not 100% sure

Thank you, it’s happening on random leaves towards the top... doesn’t seem to have a pattern.