While testing my pool water earlier today I decided to run a test on the fill water since I had not checked it in a couple of years (water source is a private well) and I found the water was considerably more acidic than the last time I tested it.
Here are the overall numbers:
TA = 30
No known detectable metals
I ran the pH test twice, once with 2 year old pH reagent then again with fresh from my new TF-100 resupply pack, using pool water with measured pH of 7.5 mixed 50/50 with tap (fill) water I extrapolated a pH of 6.7 - 6.8 of course there is a large margin of error, but this should at least show the pH is not insanely low. The last time I tested the pH a couple of years ago it was 7.0, we did have a severe drought last summer followed by lots of rain over the winter and spring this year, I am not sure how much this effected the local water table though. Does anyone else have similar acidic fill water experience? I have not noticed any big changes in pH stability lately, but also don't know how long this condition has been present.
For completenes sake the pool test showed:
FC=4.0 (still tuning in the chlorine pump for warmer water now that the new roof is on)
TA = 60 (was 70 a week or so ago)
CYA = 20 ( target is 25-30 added my last pound or so of stabilizer should boost it by about 4ppm)