Hydroponic Basil Leaves Mishaped / Deformed

[Gardener4Life]

Hey everyone, first time poster here. I'm having an issue with some of my hydroponic basil...the leaves and new growth are deformed and almost look like they are missing pieces out of them. Here's what I know:

• It is not a bug problem (I have inspected with microscopes
• Growing in 8" Rockwool Big Mama Blocks
• pH is 6.1
• EC is 1.2
• Irrigating 2x per day

The plant was looking great for the first several weeks...and now I can't seem to get it back to normal. Has anyone seen this? Any thoughts? It seems like it would be a nutrient issue to me.

Thanks for the insights!

 

[DirtMechanic]

I am a little unaware here, which particular form of basil is that?

 

[yusin1212]

same issues in here. did you found the reason?