You should be feeling very altered at the 1 hour after ingestion point. I can feel the acid within a half an hour of takeing it, it differs from person to person. But general rule of thumb is that if your not feeling the acid 1 1/2 hours after takeing it, its probably bunk. Sugar cubes are infamous for being bunk, unless you saw the liquid dropped on it, which then the liquid could even be bunk. I cant describe what you should be feeling, but by now your either pissed off because it didnt work or your tripping balls.
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"So modify this third rock from the sun, by painting myraids of pictures with the colors of one"