What Kind of Goni is this?

[BanZI29]

I got this at an LFS about a month ago and in their tank it was VERY extended and awesome looking.
Ever since I got it home, it has not extended at all so:
does any one know what kind of goni it is and
possible reasons it will not extend?
There is no direct flow and the lighting is not heavy.

current params:
Salinity = 1.026
Ph = 8.1
Ammon. = 0
Nitrite = 0
Nitrate = 48
Phos = .024
Calcium = 490
Mag = 1430

 

[ReeferHD]

looks like a large polyp turbinaria, my guess is your nitrate is too high, it should be 5 - 20ppm.

 

[SchrutesReefs]

+1 on Tubinaria