Hi all - this is my first post.
Last Test Results
FC - Free Chlorine 3.0 (However, we just shocked with 4 lbs of Chlor Brite so believe it is 10+ at the moment)
Total Available Chlorine 3.0
pH - We weren't registering at all, Leslie's had us drop 2lbs of soda ash which got us up to 7.2, adding another 3 ounces got us to 7.4
TA - Total Alkalinity 120
CH - Calcium Hardness 180
CYA - Cyanuric Acid (stabilizer) 35
Borates - N/A
We had been running with a beautiful looking pool for about 6 weeks (weekly shock & algaecide, floating 3" chlorine tablets). Test after test showed all of our levels were balanced without any intervention. Two weeks ago a day after a heavy swimming day the pool clouded up. We did our normal shock & algaecide, but it just got worse. We started going to Leslie's for direction & we found that our PH and calcium hardness had dropped (below 7.2 / 130). Soda Ash got the PH up, 4lbs of Hardness plus was added to get the calcium hardness to 180. Also PhosFree was added as it had climbed to 500, it is now reading at 100.
In general it seems that everything is balanced. However, visibility is barely 12". When I shine a flashlight in the water it appears that it is full of floating dust. Leslie's gave us a blue clarifying cube to leave in the skimmer bucket, but that isn't doing anything either. It seems like it is more of a physical filtration issue than a chemical balance issue. We've rotated between letting the filter run & spraying it clean. The pressure seems to be fine, but it just doesn't seem like it is filtering out any of this 'dust' looking stuff.
I read about flocculant type products, but none of them seem suitable for cartridge filters. Any suggestions? As we're on a well, we are very hesitant about draining and re-filling considering that we don't know the root cause & wouldn't want to waste another 5500 gallons of our well water (fyi - we had to add a full bottle of metal free at pool opening to neutralize the oxidation due to the chlorine & high solid content of the well water).