KH does not need to be 8 to buffer. KH=4 will buffer fine.
Determine how much to add for each water change and you should be fine.
I have had aragonite substrate and crushed coral in my filters for 10 years and pH=7.8 has not increased at all between tank and tap...my KH and GH are 7 both tank and tap.
Determine how much to add for each water change and you should be fine.
I have had aragonite substrate and crushed coral in my filters for 10 years and pH=7.8 has not increased at all between tank and tap...my KH and GH are 7 both tank and tap.