Today I’ve seen some concerning black thorns growing in different areas of my tanks. Some bits look like tiny black hairs almost, whereas others looks like tiny black sticks.
I’ve also discovered another peculiar specimen. They almost look like what I can best describe as some strange anemone. They have tiny little bodies attached to the plant, with 4 or more tentacle coming off them which retract if poked. I’ve attached some pictures for reference.
This is my first experience with a planted aquarium and up until now I have encountered no problems at all so would just appreciated some advice/guidance on the matters presented.