See my signature for pool specs.
Location Central PA
BBB since 2004 And Ben
I add 8.25% bleach (Clorox) and Muriatic acid automatically with CAT based on ORP and pH.
Now the issue.
I started getting corrosion on the aluminum coping which appeared to be coming from the inside out (Concrete around pool).
I hired the original pool installer to make repairs. When he arrived he told me my water was messed up (his language was a bit more harsh). They took a water sample and went about filling the holes with body putty and then spot painted.
I sampled also and got FC=3.6, CC=0 pH=7.5 Alk=90 CYA=20 (all by Taylor Titration) TDS=175 (Electronic). I do not bother with calcium hardness since it's a vinyl liner pool.
The Pool company secretary called me later and told me to dump 7 bags of salt in the pool (They obviously messed that up since it's a fresh water pool) and said my Salt was 1400 PPM.
I took a sample to a different company and they also got 1400 PPM salt??? They also showed TDS was 1850??
My question is -- Where did the salt come from?? I have never changed out the water since installation in 2002-- Just rain and well water from a hose to compensate for evaporation.
Would this be a result of the Sodium component of the bleach?? And what can I do to lower the salt level if that's the issue.
I'd appreciate any expert advice.