First Photo Grow - Blueberry Twist

These Blueberry Twist girls are smelling yummier and yummier by the day! 😊👌. Frosting up nicely too as you can see in the pics... The clawing that started last week hasn't got any worse but affected leaves remain clawed! I am not sure now after watching these girls if it was nitrogen toxicity due to a build up in the soil as the leaves didn't get too dark and that normally happens with clawing if the problem is excess nitrogen. SO I got to thinking.... what else? And I'm thinking it could be wind burn from my larger fan!! It was on oscillating mode on medium power (when I put it on low it vibrates and is even louder!!) And I think cos these girls are so much bigger than my autos they have been left succeptable to wind burn. What so u guys think?? Plz comment with any ideas? For now I have the fan in a single position blowing against the wall first then hitting the plants to hopefully stop this issue. Open to suggestions as always!! Much Love,💕 Miss B x