CH is now tending low so I will start adding in increments but two questions please
1) If I test with 10ml sample I get 275, with 25ml sample I get 230. I guess the difference is not really relevant since both are kinda low but why the difference? Or is this really no difference?
2) A month ago with 10ml sample I got 325. Maybe this difference is really no difference but say it is. How might CH decline save by splash out (which I have little) and replace with water with low CH?
Testing with TF-100
CH in well water used to replace evaporation is 90 or 100.
Splash out essentially none.
Pool is not leaking.