About 2ish years ago I bought the stuff when I was in the "must add trace elements" part of the hobby. It sounded great, and all in one trace element mix. When I got it home and read the bottle carefully, I read you have to add it every day, and I couldn't because I was traveling too much at the time. So I shelved it.
Now, I tend to not trust any solution that does everything if everyone is not using it.
I have never heard of anything like what happened to you though.
Did anything else weird happen? Temp spike, salinity spike, pH spike?
Again, this sucks for you and I am sorry.
RR