Coral issue ID please

[Gonzo74]

Can anyone tell me what would do this to the base of a frog spawn? This is happening to all of the frog spawn in my tank. It’s a slot process but looks like something is eating the bases.

I have looke for flatworms and cannot ever see any.

 

[Gonzo74]

Could it be bacterial?

 

[Gonzo74]

Bump

 

[vetteguy53081]

Any red or Black Bugs ? You can apply coral putty to them which will suffocate and block any foreign matter

 

[Gonzo74]

Been looking with magnifying glass and don’t see any bugs. Good tip about the putty. I will try that.