I have something eating the leaf tips and sides. Have some gnat looking things flying around that look like fungus gnats but I didn't think that they would eat the leaves. I'm spraying once a week with a concoction of water, alcohol, tea tree soap, peppermint soap, and a tiny amount of peroxide (works great on thrips and spider mites). (Let me know if want this formula). I think these are coming in the bag of soil (Vigaro potting soil). The spraying keeps them at bay but doesn't eradicate them. I've looked around but haven't seen anyone else experiencing this pattern of leaf eating.