That would be the anemone's poo. No worries Laurie.. your rbta should be fine in a couple of hours. It more than likely does this more often than you think, but probably when the lights are off on the tank at night.

How is the magnesium level Laurie mine used to do that before dosing mg i almost bet you it will be around 1100.

You're probably right, just freaked me out seeing it suddenly shrink up. All I could think of was "Oh $**t my anemone ate that piece of floating torch coral and now it's dying!"

+1 on pooping. A feed all of mine at the same time and all of them will have to go at the same time 2 days after. One side of the tank will look empty for a few hours. My rbta is about 20" and when it's pooping it's completely disappears in a rock work.

I have no idea, I never check mg and I don't dose it.

Good to know, I've never fed it a piece of krill before (which I did 2 days ago) so it makes sense that now it's pooping it out.

Just checked on the anemone before heading to bed and I have to say it's perked up a bit. Still fairly shriveled but not as bad as it was. Guessing it pooped and I freaked out for nothing :redface:

Geez it should of just told me it was taking a dump :lol:

Not to worry Laurie. It looks fine. BTA's, for whatever reason do this periodically. Mine is about 16" across and can totally disappear in the rocks. First time it did that I had a hell of a time finding it again. :mrgreen:

Oops, sorry mws. I posted before I read yours. Said the same thing. My bad. :redface:

Feed it silversides, and watch him really perk up

Mine has ended up being stuck to the walls of a Koralia 3 for an entire day twice now and looked much worse than yours. After I pulled it out of the slots I stuck it in a low flow area of the tank and it was as good as new the next day. It has now stayed in one spot for about a month now so I'm hoping its roaming days are over.