Sun coral will not open

[caffboy]

Advice needed on a sun coral frag i picked up last week, i cannot get them to open i tried the tupperware method listed in the sticky on a couple of ocassions but still no luck any advice or help would be useful thanks

 

[captnlars]

have you tried with the lights dimmed or off?

 

[slapshot]

More flow!

 

[caffboy]

I have tried both of those things still no luck