What are these white circles on my glass

[Reef Devils]

I just noticed these for the first time today. They are these white circles that are attached to the glass. I see a few in he front glass and about 20 + on the back wall. Are these some type of eggs?

It is the big white circles not the small ones.

 

[Troylee]

First picture looks like baby snails.. second picture looks like the start of corraline.

 

[Reef Devils]

First picture looks like baby snails.. second picture looks like the start of corraline.

I will keep an eye on the ones from the first picture to see if they move.

The ones on the front glass haven’t moved in 24 hours

I am gonna try and scrape the ones off in the second pic

 

[Reef Devils]

First picture looks like baby snails.. second picture looks like the start of corraline.

Yeah, I don’t think it’s Coraline algae. I was able to scrape it off really easily, and it was actually kind of puffed up.

I have Coraline algae in a few areas in my tank and is purple these things are white.

Thanks for help though might be snails

 

[ISpeakForTheSeas]

Assuming they don't have a shell on top, I'd think those are snail eggs (probably Nerites, if you have any).

 

[Reef Devils]

Assuming they don't have a shell on top, I'd think those are snail eggs (probably Nerites, if you have any).

Yes they don’t have a shell, and I do have some Nerite snails in the tank.

I guess I am gonna get a few more snails soon!

 

[ISpeakForTheSeas]

Yes they don’t have a shell, and I do have some Nerite snails in the tank.

I guess I am gonna get a few more snails soon!

If the eggs hatch into pelagic larvae (i.e. swimming larvae), then I wouldn't expect many (or any) to survive; if they hatch into benthic larvae (i.e. if they come out crawling), then some may well survive.

 

[Reef Devils]

If the eggs hatch into pelagic larvae (i.e. swimming larvae), then I wouldn't expect many (or any) to survive; if they hatch into benthic larvae (i.e. if they come out crawling), then some may well survive.

Ok

I didn’t know that they could come out as swimming larvae

 

[ISpeakForTheSeas]

Ok

I didn’t know that they could come out as swimming larvae

It depends on the species - some species produce swimming larvae while others produce crawling larvae; the swimming ones are typically eaten, killed by equipment, or starve (they typically have special larval diet needs), but the crawling ones basically come out as miniature adults.

 

[Reef Devils]

It depends on the species - some species produce swimming larvae while others produce crawling larvae; the swimming ones are typically eaten, killed by equipment, or starve (they typically have special larval diet needs), but the crawling ones basically come out as miniature adults.

Very interesting. Thanks for the help