in order to make the cleanse alittle easier, i don't take the full epsoms dose. taking a smaller dose, like 1/2 tablespoon in each serving hasn't seemed to alter people's sucessful flushes. and i don't do the swf in the morning, i just do the 2 epsoms servings with 1/2 tablespoon epsoms in each.
the colonic doesn't interfere with the stone output. it just gets them out of the colon faster, without you seeing them unless you're able to see the colonic water as it passes. regardless of whether you do a colonic the next day, the stone release process is finished before the morning after you took the oo.