Id this please

[Atg]

It is a little smaller than a golf ball and is attached to my substrate

 

[ebushrow]

Bump....no idea though....sorry

 

[rajkovich207]

Do you have any large feather dusters in your tank? I've noticed my small ones do this from time to time

 

[cbrennan4]

Wild guess but do you have any wrasses in your tank? It could be a mucus cocoon.

 

[Alex27]

I was going to say snail egg mass, however the size is way to big. I'm with cbrennan4, wrasse mucus cocoon .

 

[Atg]

Yes I just got a wrasse about a week ago and also a pretty large feather duster that just came back out after about 5 days. This ball had 4 nassurais snails attached to it when I turned lights on

 

[ritter6788]

Do you have any large feather dusters in your tank? I've noticed my small ones do this from time to time

This was my guess.