I recently purchased a RFG on December 26th. It was in a moderately flow tank with some sun corals and other NPS. I currently have a sun coral that has around 8-9 heads and I have no issues with it growing.I see it was open with white polyps when purchased so I know it's alive. Since I have had it in my tank it has never opened or shown polyp extension at all. It is placed in a location that gets moderate flow coming right down out of the HOB filter and UV sterilizer. It's kind of in the light but in the most dimly lit part of the tank. I know I really have to work on getting the sun coral to come out. Is there anything I can to to coax it open?I really have never had them but I figured it would be fine as I have my sun as well as a couple yellow sponges that were on some LR and are showing increased size. I see that it in shrinking down to the internal skeleton at the base end