zoos/polyps all closing up!?

[Ryan Joel Smith]

Another question,

All of the corals in my tank are doing well as well as fish. I just added two large sps as well as a lionfish and all of the sudden all of the polyps and zoos in my tank have closed over the last 3 hours. Also, my picaso trigger fish has been sucking up sand and what seems to be detrious (sp?) and spitting it into the currents in my tank.....wondering if this could possibly be landing in the zoos and polyps and ticking them off?

I also did a water change today.

any thoughts?