what type of polyps are these plz

[ORION411]

I bought this from my lfs and they were beautiful for about a week now they don't all come out it's been about 2 weeks like this and I'm not sure if placement is bad or what I've got it on the bottom right corner of my 29 gallon bio-cube
I was hoping to get it to grow up the back wall of the tank sorry in advance if I'm posting in the wrong area I'm a noon lol

 

[ccCapt]

Star polyps - Briareum sp.

 

[ORION411]

Ahhh sweet Ty for the id now I just gotta figure out why they haven't been coming out like they 1st were

 

[Marquis]

Star polyps - Briareum sp.

Are they normally purple when closed??

 

[MacDracor]

The purple is the encrusting base from which they grow. Even if they all die, the purple stuff sticks around for quite a while.
As for why they aren't opening up lately, how is the lighting and flow where they are, and what are the water parameters?

 

[Marquis]

The purple is the encrusting base from which they grow. Even if they all die, the purple stuff sticks around for quite a while.
As for why they aren't opening up lately, how is the lighting and flow where they are, and what are the water parameters?

I knew it was the base just wondered if purple is the normal colour

 

[ORION411]

The lighting in the cube is the stock fixture the 29g Bio cube came with the lights are 50/50's, the water flow is just the pump from the filter area and a koralia nano power head my water reads as follows Ph 8.1 nitrate not detectable calcium 450ish phosphate not detectable alkalinity 3.5ish mEq/L. I have a liquid test kit I use to personally test it and also have my local lfs test it every 2 weeks or so just to make sure lol

 

[ilostnemo]

What's your ammonia and nitrites?

 

[ORION411]

And yes they've always been purple when closed, usually were all out during the day light hours And u could barely c the base but now it's seems the opposite :-(

 

[ORION411]

Unfortunately I do not have those 2 test atm but when I get my lfs to check it's always good I do a 10% water change every week use ro water and red sea coral pro salt

 

[ilostnemo]

Have recently added anything new other then them? Close to any other coral?

 

[ORION411]

Nope they are the newest addition and nothing else close that's y I put them back there it just seemed naked back there lol everything else seems to be doing fine water, always check's out no changes that's what's got me spun :-\

 

[ilostnemo]

What's the flow like around them?

 

[ORION411]

It's moderate it keeps the polyps that come out usually blowing towards the opposite side of the tank but not so bad they look like their in a hurricane

 

[ilostnemo]

Move them into a little more flow and see if that helps.