God's Glue Photo Grow

Everything was going well until i see few tiny holes on NEW GROWTH. Older leaves, lower leaves and mid leaves are very fine. But new small leaves having some tiny holes and marks on them. This is very suspicious about bugs. I don't have magnifying glass yet. So i can't check under leaves or stem closely but this issue is going on about 4-5 days. So i am keeping eyes on them. I hope it's not bug issues tho. Interesting thing makes me feel good is older and bigger leaves are fine. As i said, problem is on new growth and small leaves. My fan is bit close to plants and fan is very huge. No wind burn or twisting due to wind but just small holes. I thought it could be calmag deficiency. So i raised calmag a bit. Also #3 is runt. Maybe it's because of bugs. It's same age with others but half size wide and half size height compared to them. I hope they will be fine. ------------- End of week 6 update: It wasn't bugs. It's cal deficiency. Feeding them 1.8EC now and they are very fine and huge eaters. Thankfuly no bugs :)