Guys... I think I have a worm problem.

[asylumdown]

I really don't think so. At least not from predation. I watch my tank at night a lot, those worms never go near corals. They don't so much as crawl on their bases, let alone crawl all the way to their tips and start eating them. I've never seen a single worm on a single coral, and I'm often working next to the tank until 3 in the morning. You barely even see them at night unless there's a piece of uneaten leftover food on the sand to draw them out.

It's entirely possible that something killed a bunch of them, and that's where the ammonia spike came from though.

I think I have a good trap idea. I'm going to bury the lid of a red sea nitrate test kit in the sand, and build up the sand around it so that worms can crawl. I'll drop a couple of cubes of food in after lights out, and once a large enough writhing mass of worms has crawled in to it, I'll put the bottom half of the kit on and lift it out.