Hi guys,
I've been in this hobby for about 7 months now but first time I really checked out the water parameters.
For my 48 gallon aquarium (4 months old, fish & plants)
GH=6, KH=5, PH=7.2, NH3,NH4=0.
18 gallon aquarium (3 weeks old, only plants no fish)
GH=8, KH=4, PH=72, NH3,NH4=0.
Now...