@mfinn How about an update?
I haven't updated this in a long while.
Last winter I saw a ad for some red macro algae that I haven't seen before. Looked a little like chaeto, but red. So I ordered 2 bags.
A couple days later it arrived when I was at the store.
my wife called and asked me if I wanted her to put the macro in the refugium.
I said sure. I was a little distracted and busy so I didn't give her specific instructions on what I would have done.
I got home a few hours later and I didn't notice anything. Was busy.
Later when I went to feed the tank I noticed there was a red tint to the water. I looked carefully at all the fish, which ate normally, and all the corals looked fine.
The next morning when I got up early I remember not seeing any of the anthias. There were 7, and one or two usually come out when the kitchen lights come on.
A hour later I saw there were no fish swimming around. Usually by this time I see most of them swimming .
So I looked a little closer and the first thing I noticed was bare lps skeletons. A couple big frogspawns ( 20+ heads each) and a hammer that was 20+ heads were completely dead. No tissue left at all.
I bumped the lights on and then I started seeing dead fish.
I lost all the anthias, lawnmower blennie and a couple other fish. 10-11 fish, a bunch of lps and nearly all the mushrooms in the tank.
I'm sure there were others, can't remember right now.
I did a 70 gallon water change ( had it already mixed ) and added a quart of carbon. Started mixing another 70 gallons and did that late that night.
I did another 70 gallons the next day and changed out the carbon with another quart.
Near as I can figure the macro died in the bags and when my wife dumped it in the refugium water and all, the decaying matter caused a low oxygen situation in the tank, among other things.
It really bummed me out. I've never had a large scale die off like that before.