Who Gives A Fish Forums

I've tried feeding them reef roids, rotifers, fauna marin seafan food, fauna marin zoa and ric food, and even fauna marin lps grow and color that I grind up with a mortar and pestle, plus calanus powder. No real feeding response from my Alveopora, though.

I've had Gonioporas that visibly eat the food I give them, but my Alveopora just doesn't seem to react.
Sometimes the polyps will retract, but I'm not sure if that's actually them feeding or just a reaction to the food touching them.
I've never actually seen my Alveopora eat anything - it's like ...