Problem with one of my leaves?!

Ok so my plants just in standard compost seems to be going fine except one of the leaves, I can't imagine it's been eaten because there are no other signs or anything else like this?

Any ideas, it hasn't been ripped becuase it got worse overnight?

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Is it a trick of the light, or is bottom right edge of the deformed leaf brown? Are you feeding them anything? What's your water like?
Could be nothing, but if it continues to worsen or other leaves begin this, post back. G/l!

Aw, man. That's rough...you're toast.

Seriously, if that's the only thing wrong, you're doing an excellent job. As Lo said, if it continues to worsen or spread, you may have something to worry about, but what I see in your pic is nothing to stress at all.

Cheers!

New growers. If you have 20 percent of your plant looking fucked up then you have cause for concern. Until then, keep doing what your doing. That leaf is a nice shade of green. Cheers.

Nice ome guys if it gets worse I'll post here again cheers