TA test affected by FC ?
Before slaming, my TA was 90 ppm (i count 9 drops)
Now, at FC of 5.0 i only count 5 drops for a TA at 50 ppm .
I dit not refil the pool, nothing. I only add this morning 1kg of borax to ajust pH
I always test in 25 ml, add 2 drops of reagent 7, 5 of reagent 8 and after i count each drops
Also, i have some reagent left from last season, and i got the same result (5 drops)
There my actual result:
FC= 5 ppm
Thanks helping me