Hi, iv looked at your pics.. But to get more answers you need better pictures, close ups etc, and post them into this page buddy... At what I just seen it could possibly be a pest, But it was very hard to tell.
Get some more pics mate and post them up on here, you'll get answers in no time then..
I went to the gallery and saw your picture. It looks like the beginnings of a magnesium deficiency... very common, these plants need a LOT of magnesium. Purchase or make some calmag and start using it on every watering. A temporary band-aid fix would be to foliar spray epsom salt on the leaves, but don't get it in the soil.