I have been reading for the last few hrs. Interceptor Kills your shrimp, crabs, hermit crabs, and pods... So for those of us with large tanks and many crabs, shrimp etc... our levels will rise with the sudden die off...Ammonia spike and every other thing that comes with it. I don't think these bugs just appeared but they have probably been here, why haven't we had these problems years earlier? I am going to try the pipefish and gobies before I treat it and spend 10hrs breaking down my tank to pull out all my dead critters... I sure hope the pipefish work.... just my measely $.02