What are these things?

ssster2020 · May 25, 2023

Hi all, can someone ID these green discs? They showed up a week or so ago. Three of them as far as I can tell. They haven’t moved. Are they harmful? Thanks

ISpeakForTheSeas · May 26, 2023

I’m not sure what they are - do you think you could get a close up pic of one under white light?

vetteguy53081 · May 26, 2023

ssster2020 said:
Hi all, can someone ID these green discs? They showed up a week or so ago. Three of them as far as I can tell. They haven’t moved. Are they harmful? Thanks

Looks like algae spores. Please post pics again under white lighting for positive i.d.

ssster2020 · May 27, 2023

ISpeakForTheSeas said:
I’m not sure what they are - do you think you could get a close up pic of one under white light?

yep ill post one tomorrow

ssster2020 · May 27, 2023

This is as close as I can get with my phone, using Sky Photo Mode light

ssster2020 · May 27, 2023

I did a water change today and the water level allowed me to take a close up, also they are hard, calciferous. Honestly they feel like a montipora. Not saying they are but that’s what they feel like

ISpeakForTheSeas · May 27, 2023

ssster2020 said:
I did a water change today and the water level allowed me to take a close up, also they are hard, calciferous. Honestly they feel like a montipora. Not saying they are but that’s what they feel like

I'm not sure what it is, but montipora or another coral may not be a bad guess. The only other thing I can think of at the moment that it might be is a bryozoan such as the Alcyonidium sp. (the first specimen pictured) in the link below:

SW Arch 1241

ssster2020 · May 28, 2023

ISpeakForTheSeas said:
I'm not sure what it is, but montipora or another coral may not be a bad guess. The only other thing I can think of at the moment that it might be is a bryozoan such as the Alcyonidium sp. (the first specimen pictured) in the link below:

SW Arch 1241

Thanks for the help, I think you might have it, definitely looks similar

Wasabiroot · May 28, 2023

ISpeakForTheSeas said:
I'm not sure what it is, but montipora or another coral may not be a bad guess. The only other thing I can think of at the moment that it might be is a bryozoan such as the Alcyonidium sp. (the first specimen pictured) in the link below:

SW Arch 1241

That looks very close! That's pretty neat. Biodiversity for the win