I know exactly what I'm saying. Do you?
My statement is that Vibrant is not the direct cause of the RTN. It's likely being caused by something else all together. A dose of Vibrant is not going to suddenly make your acros RTN. The bacteria literally cannot deplete your water nutrients that quickly until they multiply on the substrate and sand bed and other filtration media. Bacteria multiple quickly, don't get me wrong. But a reasonable sized tank being dosed with the recommended amount just isn't going to bottom out immediately unless the levels were already teetering on the edge of undetectable. 3 or 4 days later if your nutrients plummet, your acros no longer have water borne nutrients ,and get ****** off and decided to suicide, then yeah maybe sure, but that's not the Vibrant's fault, that's the reef keepers fault for not monitoring for that.
Posts like his simply stating something like: "one dose of Vibrant made my SPS RTN!" should be held to scrutiny, especially in the absence of any sort of evidence.