Spotting on leaves, don't think it's bugs

[Custom45]

Hi,
Have some plants in week 1 of flower and for the past few weeks have been getting these weird spots on random leaves. Have 5 plants, 1 seems ok, 2 have the odd affected leaf, other 2 have several leaves. I've looked for bugs and can't see anything. Sprayed them with Killermite a few weeks ago which I find very effective at killing mites and thrips, but still getting spots.

The spots seem a little raised, like mini bumps and a few leaves like in pic they've caused holes in leaves.

They're in coco, in air pots, feeding shogun nutrients under 200w led lights. Temps 24, humidity around 50.

Any thoughts? Someone suggested Sulphur burns?

 

[Moshmen]

Hi,
Have some plants in week 1 of flower and for the past few weeks have been getting these weird spots on random leaves. Have 5 plants, 1 seems ok, 2 have the odd affected leaf, other 2 have several leaves. I've looked for bugs and can't see anything. Sprayed them with Killermite a few weeks ago which I find very effective at killing mites and thrips, but still getting spots.

The spots seem a little raised, like mini bumps and a few leaves like in pic they've caused holes in leaves.

They're in coco, in air pots, feeding shogun nutrients under 200w led lights. Temps 24, humidity around 50.

Any thoughts? Someone suggested Sulphur burns?

View attachment 1956861

Hole plant pics - sure looks like big bites u look with a loupe

 

[mjab702]

Mites?

 

[Custom45]

Hole plant pics - sure looks like big bites u look with a loupe

Will try and sort pic out later. Rest of plant looks nice and healthy, just several random leaves like this appearing.

Looked with loupe, yes, I can usually see mites or thrips with naked eye, not seen anything with eye or with magnification. Must've checked a dozen leaves, no sign of life.

 

[Custom45]

Mites?

Nope, not seen anything living on there, no mites, thrips etc.