I'm pretty sure its NPS, purple with white polyps. I try to feed it as best I can but the last week or so I'm seeing little to no polyp extension. Recently had to cut out some areas of skeleton that algae was growing on. If anyone is interested I'd rather see someone take it and nurse it back to health rather than myself killing it slowly. Might have been my worst impulse buy ever, if I had know it was NPS I woulda left it. I would like a frag or two of something in trade if anyone is interested, this is my only coral I'm having trouble with.