What are these?

[mommysue]

Any help would be appreciated (also whether to keep or *Plays Taps*).

Thank you in advance.

and

 

[kzickovich]

looks like aptasia nuke it with joes juice or if you only have a few you could inject it with boiling water

 

[Vitaly]

First picture of an Aiptasia ("Glass Anemone"). Most hobbyists consider them pests. They mutliplte quickly and may sting neighboring corals. If you have access to a syringe...load it with some store bought lemon juice (I used the kind that comes in the yellow, lemon shaped container)...and inject it in the mouth. This was been a successful strategy for myself and colleagues.

The second picture is a bit harder to judge, given the angle. It may be some sort of Palythoa or Zoanthid ("Button Polyp"). Is there a long stalk like the object from the first picture...or a short stalk?

Also, where in Illinois are you located. You should explore the local reef clubs such as the Central Illinois Marine Aquarists (CIMA):

http://reefcentral.com/forums/forumdisplay.php?s=&forumid=110

There is also a Chicago, Bloomington, and Rockford club.

 

[The Floodinator]

I agree. The first pic an aiptasia, very very bad! Kill it fast or suffer long time.
The second pic looks alot like the palythoa I have. They're not as bad, but if I had it to do over I would have left them at the LFS. They spread like weeds.

 

[mommysue]

Thank you so much for the replies. I am not sure how long the second's tube/stalk is, it is in an awkward position to see a side view. It did close up when I opened the lid of the tank (startles easily I guess) and tried to get a pic.

Thank you again.


ps Vitaly. Northern IL