What does the Carbonate Hardness (KH) needs to be at?
<20 mg/l
20 - 80 mg/l
>80 mg/l
Between 105 - 125 mg/l, it says its only for saltwater.
I have a 2 gal. freshwater aquarium. I will be buying a male Betta once the water is ready and once I will have received my heater.