Acans and Echino - how long does it take?

[Biotech]

I have been keeping corals for a while, but this is my first time getting Acans and Echino. I received some zoos, acans and echino from an online store this weekend. Now, all my zoos-polyps have opened, but the acans and echino do not seem to have "perked" up yet. Can someone please tell me how long does it take for them to "adjust" to a new environment.

 

[Purple Haze]

try feeding them after lights out and see what happens.