found a hard "capulse" in cheato??? ID???

so i was just checking out my fuge and saw what i thought was a large air bubble. about 3/8 in in diameter. i turned the ball over and it went to the top and did not pop. so i grab it.

it was a hard capsule. i squeezed it a bit and it poped. sorry could get a pic before i poped it.

any ideas on what it could be???

 

Possibly bubble algae, you will most likely have spread it's spores around you sump and will soon have many more.

 

so i found some more. they are smaller but in a strand kinda like grapes.

the one i poped earlier was outside of the tank.....if it is bubble algae should i remove the whole ball of cheato???

 

forgot to attach the pic

 

grape caulerpa

 

That is a form of caulerpa, good for export but you will need to watch closely. Thin it often. If any starts turning white get rid of all the white areas and a large portion of the green.

 

+grape caulerpa