ID Please and how to keep the colour?

[waterkei]

Hi all,

I'm a new guy in this forum, and get the coral , can anyone tel me this type of coral name? Thanks

And I also want to know, when the first page is the normal case, after 3 months later, the coral disappear the green colour. How's to make it recover?

Thanks

Normal
http://reefcentral.com/gallery/data/500/144812lost1.jpg

After 3 months
http://reefcentral.com/gallery/data/500/144812lost2.jpg

[drummereef]

Clove polyps perhaps?

[waterkei]

Thanks~

Can it recover the colour from white to green?

I using 170W HQI plus two T5ho 14000K Light equirment

250Litres water , no3 =0, po4=0

[Ryanqk]

kinda look like anthelia to me, but i could be wrong. The best thing for any coral to keep colors up is the proper lighting, What kind of lighting is over your tank? Most often when coral is white its been bleached from high water temps or not enough light. this info would help us help you along with a shot of the coral closed up so we can see the structure beneath the polyp heads

[SitBackAndWatch]

Clove polyps indeed Drummer

Clavularia sp.

Do you have any Actinics running on that tank?

[waterkei]

Thanks for help!