reefsahoy
I can see thru you!
Sorry to hear about the bad news but glad to hear things are on the mend. Your heart would have dropped when you saw it!
Having a light fixture fall is also a concern with my new setup too. My ceiling is concrete and I have used x4 anchor bolts to hold the light fixture up.
it's not that the light fell because of short install error on my part or an accident. the cable was torched and welded to have a "nipple" for a stop gap. the nipple came apart and wham! light in tank! it must have made a loud noise because the dog would not come out of his crate to greet me!