How do you prefer to raise KH?
Well I made the switch to RO based on the insane water parameters from my water supply. I'm using dry ferts (CASO4 and MgSO4) to get the GH where I want it.
What are you using to bring up KH? I know a can do crushed coral, aragonite, buffers, etc but I want to know what you use and why. What do you prefer?