If your calcium level goes much over 400ppm, your risk of a milky pool increases. All dry chlorine combinations have drawbacks. Cal-hypo's is rising calcium. Di-Chlor's is lowering pH and raising CYA. Tri-Chlor's is REALLY lowering pH and raising CYA, too. Lithium is insanely expensive and we have not seen or heard of it working any better. Only bleach/LC have virtually no side effects.

Carl