Today I picked up my first KH & GH test kit. It's an API liquid test kit. I'm not sure I'm performing the test correctly.
For KH it says to put a drop at a time until the water changes to bright yellow. It took my tank water 4 drops so according to the way I'm reading the chart it puts the water at 71.6 ppm which translates to 5 degrees?
For GH it says a drop at a time unril water changes from orange to green. It took 15 drops to go from orange to green and the chart only goes up to 12 drops. Does this mean +400 ppm which translates to 22 degrees plus?
Am I doing this all wrong or do I need to get an easier to understand test kit? Yikes...does mean I'm going to have to go to R/O water?
Thanks for any & all help....kym