Mine does not slough that often but they do do it. I have one I just fragged that has not opened up yet. It should be fine but sucks waiting. If he is opening good now, I would not worry.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,