I've started a tropical aquarium for the first time and I've had it running for 2 weeks without fish. I bought a test kit that measures the GH, KH, PH, NO2 and NO3 levels. However they're all wrong
The levels are showing they're this..
GH - 180ppm
KH - 180ppm
PH - 8.0
NO2 - 0.5ppm