Johan says these are typical 'burning marks'. But how did they get there? The leaves weren't very close to the lights. Does the plant get too much light? Does the fan make the leaves evaporate too quickly? Does something in the air influence osmosis?
What is this?
Mysterious symptoms on leaves
Last sunday we saw mysterious symptoms on some of the plants. The leaves look like they miss all their chlorophyl, but the fibers are still there.