aciam - Nightmare conversion from baquacil to chlorine

[waterbear]

I would do it like this:
sprinkle it on the surface of the water and let it sit for 48 hours, stirring every so often. Then add 1/4 teaspoon 6% bleach (this should raise the FC by approx 20 ppm), stir, and test with OTO, it should be dark yellow orange to brown if the chloirne is holding (percarbonate destroys chlorine and vice versa but after 48 hours I would think it was all used up) . IF it is still very pale yellow or clear add another 1/4 teaspoon bleach. When the bucket is holding chlorine. test with FAS-DPD and see if the CC problem has been solved (HIgh FC, little or not CC). Let it sit an hour or two and test again to make sure CC has not climbed like it has been.

If your test results are better than before the percarbonate it is probably worth a try. Like I said before it might take two or three applications. so If the first time is a no go repeat the percarbonate on the same bucket of water and see if two ( or even three applications) do the trick (wait for the chlorine to drop low first...a few hours of sunlight should do it). If so just add your dose to the pool every 48 hours with pump off, skim, and fitler for 48 hours then shock with chloirne and test.

Chen geek might have another way to do this.