Really? I might have to experiment with that. Do you remember how long it was before you noticed something was wrong?
I'm sure it happened sooner but I didn't notice it until about 5 days after dumping in the salt lol~killed all the flat worms, all coraline, all copods/amphipods, all bristle worms. My SB is probably no good but I tried really hard not to stir it up while draining out all the deadness. Looks like a new fuge lol. New pods/chaeto should be here tomorrow so I'll be reseeding of course.