Hello all fellow tfp'ers. I've been doing great with my pool this year until just 2 days ago it started to look like the water was turning cloudy. My chlorinator ran out of 3" tabs for a couple days while i was out of town. Any suggestions? Should I shock it, I have only shocked it once and that was at the beginning of the year. I do add super clarifier on a weekly basis as well, but that didn't help this. It's never looked like this before.
21,000 gals. 33x16 with 8ft. deep end to 3 1/2ft or so shallow.
CYA = 100
tot. chlorine = 0.3
free chlorine = 0.3
ph = 6.6 ( have borax ready )
tot alk = 71 ( have baking soda ready )
tds = 1200
tot hardness = 319
the only other concern i have, is that my sand filter normally runs at 22lbs after i backwash. now, no matter what, it's 24lbs after a backwash. how often should i be backwashing as well? i do it quite frequently.
thanks for any help,