Branching Goniopora

Need Help....

I have had this coral about 3 weeks and it has never opened for me... the polyps extend about 1/4" but in the store it was extended like 1 1/2 or more.
I have tried everything different levels in the tank different flow rates and doesnt seem to make a difference. Several people have said my tank is to clean they prefer dirtier water. I have tried feeding them and nothing.... any advice.......
 
Hey Tri, yeah thats what I did for the first week.. and it was the same... I am afraid I am going to loose it and I dont want to its a huge colony !!!
 
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