Hi all, I was moving the bio media in my sump to sit my skimmer on top and found various critters. I’ve never had these before as far as I know, and the media and transferred from my old tank which was several years old. So I don’t know what to do about them, some advice would be much appreciated
First one- is this a bristle worm?? I haven’t seen any more but judging by its size I assume there are.
Second are these sponge things? One big one in the picture above and more below.
Lastly my sump is covered in what I believe is spirorbid worms. You can see them on the media but they’re also all over the glass. Am I correct in my understanding that they’re harmless and fine to leave? Or should I scrape them off?
All the biomedia has been removed.
Thanks heaps in advance!
Second are these sponge things? One big one in the picture above and more below.
Lastly my sump is covered in what I believe is spirorbid worms. You can see them on the media but they’re also all over the glass. Am I correct in my understanding that they’re harmless and fine to leave? Or should I scrape them off?
All the biomedia has been removed.
Thanks heaps in advance!