I assume this snotty looking stuff on the surface is algae or maybe an early stage in the life of a fern? Many of my Nep seedlings have this and a dark brown to black version beginning to cover the surface, it begins as a single bubble here and there and then slowly covers the surface. I am also seeing a type of moss coming up from this snot. Can someone educate me about what I am seeing and if I should be concerned. Would an algaecide be advisable and what type or brand?
This moss seems to grow out of the snot but I don't understand the connection.