Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
What units does your test kit report?
A raw number does not tell you anything.
GH & KH are measured in several ways. Please tell us whether the numbers are German degrees of hardness, parts per million, milligrams per liter or something else.
There is a kit (I forget which) that changes color at some intermediate value and you do need to do some math to figure out the result. Almost all are better, and change color in a way that reports either ppm or German degrees of hardness. These are both value d results. Doing math to go from one to the other is optional.