Along with posting test results , please list the ingredient in the "shock" you're using-- dichlor or cal-hypo? Also, what's the ingredient in the algaecide? Polyquat or ammonia- based?

Don't add anymore of the algaecide for now-- it's mch better at preventing algae in low- chlorine situations than it is in killing a bloom. Chlorine, and lots of it, is what you need. Post up your results and we'll help you go from there.

Janet