plantladylin said:Hi sharkfur,
Your Southern Maidenhair Fern (Adiantum capillus-veneris) looks very healthy but the brown, crinkly leaf edges may be from lack of enough humidity. You might want to try misting it daily, or even a couple of times a day to raise the humidity.
Hopefully someone more knowledgeable will be along soon and be able to offer suggestions and advice.
woofie said:How big is that pot and how long has it been in it? It looks a bit small for the size of the plant. Mine started getting quite unhappy when I left it in the same pot for several years, started losing a lot of foliage. It is now slowly recovering in a larger pot.