My pool is cloudy and will not clear it is 18 x 36 inground about 27000 gallons. I threw in 3 pounds of cal hypo and didnt get a reading so today i dumped in 8 gallons of liquid chlorine and 4 hours later FC is back to 0 and TC is around 10. My ph and alk are perfect and my CA level is around 25-40 ppm. HELP!!