1. Do the DE test on the filter, to make sure it's functional: http://pool9.net/de-test/

2. Any time the pool is cloudy, make sure the pump is running 24/7 (UNLESS you are trying to allow dirt to settle)

3. Add chlorine to hold FC > 4 ppm; high is better than low.

Other comments: it's unusual for fill water to be hard (high in calcium) AND have metals (iron, copper, or manganese). Test your FILL water with the K2006 (just test pH, TA & CH; don't test chlorine or CYA).

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