I would stick with just the bleach until the conversion is complete--you want your Cl to be 100% effective. Also, if possible, you need to add the bleach 2-3 times daily, after testing for Cl, and add whatever amount is needed to get back up to 10-12 ppm. The more often you add, the faster your conversion should go. Save the dichlor for after the conversion is finished and your filter media is changed. By then, you'll need the Cl and the CYA that the dichlor offers.

Janet