Those are all forms of chlorine. We really need to know your cya reading. Those tabs are continually adding more and more cya and when you get too much, it can be a problem. Most of us here on the forum just use plain, unscented laundry bleach as our source of chlorine. What ingredients are in the shock powder and in the granular chlorine? I have a feeling one or both of them may be dichlor powder. It, too, will add more cya. Post as soon as you get that cya reading for us to look at.