Tap water is under pressure, and the water in your pool evaporates & off gases, concentrating and/or lowering valuesMy fill water, how am I so off? Could my 4 month old reagent be bad?
I went from 250 to 200 ppm in a week or 2, I tested tap water and got 500 ppm.Tap water is under pressure, and the water in your pool evaporates & off gases, concentrating and/or lowering values
How long since you last filled?I went from 250 to 200 ppm in a week or 2, I tested tap water and got 500 ppm.
I agree but I tested it 3-4 times with the same result. 10ml, 10 drops and 3 drops. drop and wiping between till it goes, and stays blueish.It was not possible to have that much lower CH in your pool vs your fill water unless you drained over half the pool and filled it with rain water.
There is a testing error somewhere.
Filled mid February, normal spring rain (last night 8" but I haven't tested today)How long since you last filled?
Lots of rain?
Yeah, that's not the usual case at all...
I believe it has by volume OR by weightPool math tells me to add 14lbs of calcium. On a scale 32 oz in a measuring cup weighs ~1lbs. So do I add 14-32oz cup full? Or 7 cups full? This is a huge variance?
I was at 175ish, added 7lbs by scale and I’m now at 250 as of this morning. 14” of rain the last couple of weeks.I believe it has by volume OR by weight
:edit: What is your calcium level that you are wanting to add that much?