Satj,
There's probably a 95% chance that MORE chlorine, not less, will clear your pool.
I suggest adding enough chlorine to bring your total to 15ppm (not less) and then adding as often as you can to hold 15ppm. Keep your pump running 24/7 during this process. Vacuum frequently
To get a rough idea of where your Cl is now, dilute your test pool water with 50% distilled water and test. If your result is 4pp, that means you have 8ppm in your pool. Add enough Cl to your pool to get 7 more ppm and HOLD IT THERE (15ppm) 'til your water clears up. May take a couple of days or so. Backwash or clean your filter often, whichever is applicable.
Bookmarks