Cooking and Curing Rock....

[asylumdown]

why is there so much die-off? Wasn't this rock live from a tank? Did it spend too much time out of water?

And that crap on the top looks like a very, very serious case of what develops on the surface of ponds when they've got a water fall and too many dissolved organic compounds. Was it foamy or was is gelatinous?

If it was gelatinous, it was probably a biofilm of bacteria, if t's foamy, it's DOC froth, much like the foam that collects in your skimmer cup. In either case, a strong indication of decomposition