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Every Friday I add 2 oz of Defender, 2 oz of Bright and Clear and 2 oz of Enzyme.
Just to reiterate: Adding Defender and Bright and Clear at the same time - even on the same day - will cloud the water.Yes, you can shock with dichlor if you are using Bromine. 8-)
AGhhhh, guys why would you use household chlorine--no way! Bad for PH, skin and spa elements, you'll be replacing jets in less than 2 years. I prefer MPS as it sanitizes (a little) with shock. ...My favorite system with heavy use is: an ozonator, ION cartridge, MPS shock and 2 tsp of chlorine after each use in addition to the weekly enzyme cleaner...
How old is your ozonater? Regardless of what the manufacturers say they tend to go after about a year.