Hey guys. So, I'm currently fishless cycling a 75g peacock tank (I'm new to this). I'm about a week in, but I just got an api kh/Gh test kit. At the tap, my kh is at 35.8 ppm & Gh is at 53.7ppm. pH is 7.4. At the tank currently, kh is at 89.5 & Gh is at 107.4. I just purchased some seachem lake salt as well as Malawi buffer. Also my ph at the tank is 8.0. I have holey rock and Carib sea cichlid substrate in the tank. With all that said, what do I need to do or add to the tank before adding fish and I'm assuming I should add these supplements during water changes?