The test is by Nutrafin / Hagen. Says Carbonate and General Hardness Test (KH/GH) for Fresh & Salt Water.
and ya, I did have to times the KH by 10 and the GH by 20. Here's exactly what it said to do.
"Multiply the total number of drops by 10 to determine the general hardness in mg/L (ppm) as calcium carbonate (CaCO3)."
"Multiply the total number of drops by 20 to determine the General Hardness in mg/L (ppm) as calcium carbonate (CaCO3)"
Now that I read these again, I'm thinking they misprinted the KH where it said "to determine the general hardness", it should have said carbonate hardness.
On the back it shows it again saying.
"multiply the total number of drops used by 20 to determine General hardness."
"multiply the number of drops used by 10 to determine Carbonate Hardness."
It does give a conversion table for the GH/KH for 5 others like fH and Clark H and dH... and as a matter of fact for dH it says take the GH (ppm) times .056 for the dH and that's almost exactly the same as Rex Grigg's divide by 17.9. So that would give me a dH of 6.16 or 6.145 or would it I use the GH 160 x .056 (160 / 17.9) for an answer of 8.96 or 8.938.
Hoppy, what you said makes sense too. KH=11 GH=8
Sunkyokim...isn't using distilled water bad? that is essencially "dead" water, but the R/O water is useful.
Okay guys, let me know if you understand all that, or if I just made everything more confusing!
Thanks!!!!! I feel a little better now, I think I'm probably in the ok range now