Hello everyone, I am quite new with orchids. We have currently seven. At least four of them have gradually developed the same problem. The new leaves appear small, with brownish-yellowish stains (around the edges), and if they grow, they do so deformed and full of some sort of scars. Any idea what it may be and how to treat it? Other than that, the orchids are doing really well, and they all flowered nicely. Thanks!