What are these?

[AngelsNano]

I have loads of these on the back wall. The ones in the pic are on the glass. Any idea what they are? Tank is 14 gallon IM Peninsula. Parameters seem good/stable at:
Ammonia 0
Nitrate 10
dKH 9.3
Ph 8.26
Calcium 420

2 Black Ocellarus
1 Yellow Watchman Goby
1 Pistol Shrimp
1 Red Tuxedo Urchin
3 Scarlet Hermit Crabs
5 Astrea and/or Troxhus snails
4 Nasarius Snails
3 Cerith Snails

Thanks in advance for your help.

 

[DSC reef]

Looks like snail eggs and medusa hydroids.

 

[Auquanut]

^^+1^^ And welcome to the club!

 

[KJ]

Nasarius snails eggs.

 

[AngelsNano]

Thank you so much. I was hoping they were snail eggs. Those buggers are busy. Lol. The hydroids - from what I’ve read there’s nothing to worry about with them. Please correct me if I’m wrong. Again thanks so much!!!

 

[William Mumford]

Thank you so much. I was hoping they were snail eggs. Those buggers are busy. Lol. The hydroids - from what I’ve read there’s nothing to worry about with them. Please correct me if I’m wrong. Again thanks so much!!!

Filter feeders they are fine and 1000% normal you can get rid them manually or leave them.