Hitchhiker in micro algae

[JamieStThomas]

Found critters in the micro algae I bought today. Does anyone know what these are?

 

[WV Reefer]

Found critters in the micro algae I bought today. Does anyone know what these are?

Aiptasia. They are a pest Anemone that can multiply very quickly.

 

[kyleinpdx]

WV Reefer is spot on. I wouldnt suggest using this chaeto. You'll begin to find them popping up everywhere. One or two arent hard to deal with but when you end up with dozens on each rock it becomes a very protracted battle to get rid of them.

 

[rkpetersen]

Return it and tell them they're selling contaminated chaeto. Dog knows how many people's tanks they've damaged with this already.

BTW, welcome to the forum! (Sorry for the bad news right out of the gate. )

 

[Whysosalty]

Tough break. With that much aptasia on there, I find it hard to believe whoever sold you the chaeto is oblivious to their aptasia problem