A very brief history. Two weeks ago I raised CH from 150 to 300. I then did a citric acid stain removal with 10 lbs in 20K gals (an amount that I now think was overkill). I then raised borates to about 40.
I have been having cloudy water since the acid treatment that sometimes seems to clear up but quickly reappears. It’s as bad as ever when it reappears.
But here's something that also seems very weird. The spa receives the same water return as the pool and overflows into the pool. Sometimes the spa is virtually crystal clear but the pool is cloudy. Other times the spa appears cloudy but the pool is fairly clear. Then sometimes they’re both cloudy and very infrequently both clear.
If I look closely, it appears that the tiniest of particles are moving about in the pool. If I fill a glass with the pool water it appears that some the particles are actually the tiniest of bubbles. However, when I compare it to a glass of tap water, I can still see a lot of tiny particles in the pool water after the bubbles dissipate.
The chlorine demand has been immense. I’ve added over 30 gals of 6% bleach and I’m running my SWG at a rate that would easily keep over 2 ppm under normal circumstances and the FC still drops to zero. FC has dropped from almost 5.0 to 3.4 in the last 2 hrs. I don't think that the FC is ever 0 for more than a few hours at a time. The pump and SWG are running pretty much 24/7.
I added some clarifier (cationic polymer) this morning with no positive effect so far.
Test results are as follows:
FC 0 to 5 depending on how soon the test is conducted after adding bleach.
pH 7.5 and slowly rising (I add muriatic when it reaches 7.7)
TA 110 and slowly rising (drops slightly when I add muriatic)
CH 300 steady
This is a real head scratcher but any ideas would be most welcome.