I have just noticed these small holes appearing on 2 of my plants. Can anything apart from something eating it cause this? I have recently changed from hid to led lights.
@Mr. Grow It i have inspected them with a handheld microscope and cant find anything. I have removed the leaves with damage on and so far no more have appeared.
@Tapper82 Glad to hear there's no pests. I've had random holes like that appear on leaves before. If there's no pests, sometimes damage like that happens from handling the plant (like training), or from equipment like fans. Those are just some possibilities.
I suggest inspecting the plant for pests.
Maybe leaf miners, or thrips. Look closely under the leafs for bugs or eggs. You will most likely need a scope.
Look lIke it to me