So I've had this goniopora for a little over 3 weeks and it has not fully opened. (about 1.5 inch most) and anytime i drop something onto the floor or walk a bit to hard, it closes up for a couple days. Same thing if a hermit crab gets too close. Even if my hand is in the tank too. All the other corals are doing fine except this one. Its really frustrating to see it only somewhat happy every 2-3 days. The weird thing is that it opens up more at night too. I have tried numerous places in the tank and it looks happiest in its current spot. (only moved it every 4-5 days) So should I just replace it for a more active coral? Or will it get better with patience? I really like the look of the coral but it just hides. This was it yesterday before a hermit crab stressed it out and now its fully closed.