Pool Magic?

[chem geek]

This is most likely Natural Chemistry® Pool Magic™ which is enzymes that will help break down (oxidize) organic material. Though not necessary, it shouldn't do any harm. Note that in their info they say that "Chlorine / sanitizers above 6ppm may deactivate product" so chlorine probably breaks down the enzyme over time which means use of this product will probably have your chlorine drop faster than it otherwise would.

[pigbat]

Thanks! It would be ideal if companies would be clearer about the actual ingredients in their products.