any idea what kind of coral

[54seaweed]

when open it has purple and yellow polyps
each open to about 5/8 of a inch
Ill try to get another pict when it opens
got 3 nice 3 1/2 inch frags out of it for $15.
opps :almost forgot to add picts

 

[Flreefer]

They look like Clove polyp, also called Glove polyp tubes.

 

[54seaweed]

there huge

 

[kdpuffer]

They look like snake zoas to me. Do they open up at night only? Try a google search for them and see if that's what you have got. I got three white nubs on my lr that I got from a sump and once in my display they grew and started to open up, they look just like yours but are green with white/clear polyps. I attached a pic for reference they are the ones in the back.