That seems like a lot for this time of year up here. What temp is your water? What is your CC level? I am guessing the stuff you are seeing is algae, so I would keep above your minimum shock level until it's gone, or at least for a few more days to ensure it is not algae.
I would not up your CYA concentration yet until we are sure that you do not have algae. Even then I would wait until we are more towards summer to decide if/how much to raise CYA.
I would not up your CYA concentration yet until we are sure that you do not have algae. Even then I would wait until we are more towards summer to decide if/how much to raise CYA.