Aiptasia ?

[eli@fijireefrock.com]

Originally Posted by Coasting

Getting pests like Aiptasia has nothing to do with your water chemistry, their their there, they will reproduce until you kill them all off somehow.

But on that note, that doesn't look like Aiptasia.

Google Hydroid Jellyfish, then go to images.

http://www.wetwebmedia.com/jellyidfaqs.htm

They are not aiptasia simple hydroids for your smaller fish to feed of...