what is the media , seems to be a little dark, maybe some live sphag. top dressing would help, and give us here a few of your grow conditions, so the members can make a more suggestions, i was told to keep my seedling hamatas and young hamatas in very high humidity, but if your having mildew on the surface i dont know what to do about that,keep checking back here, there will be someone with more advise soon, this is the place to find the answers.