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That pic was off the shops website looks the same in my tank! Iv put in high flow at the top tmc luminare lights .... shud be ok ...?It’ll take some time, maybe a week. Acros that I had in my frag tank I just recently moved them to my display and still aren’t at full polyp extension.
Yeah luckily he was using the same lights in a shallower tank so should be around the same par. It actually has polyped up more since i posted thisUnless your light par and parameters are the same I’d place it down further to give it time to adjust to your tank. My new frags always go in the front right or left corner of my tank to adjust for a few days before I start moving them to their permanent spot.

Polyps are out now but il bare that i mind thanksPolyp Extension can be both a false positive, false negative as well as fools gold all at the same time. PE is mostly used for gas exchange in the corals, so some will not even try much when they are doing really well - why would they risk some getting eaten if they are thriving? Like said above, some have to get larger to have much PE at all - this is likely because flow is harder in and out of colonies than around small frags.
Color, growth and continuing to encrust are much better signs of a acropora health than PE is.
Seriously, do not chase PE.
My best advice is to glue it where its going to be and watch it grow. Keep it simple.

