Hey guys, I currently don't dose anything and just do water changes to keep my parameters in check. The water changes aren't cutting it any more so I want to try kalk. I've done a lot of reading on it. I'm thinking of using kalk, ro and vinegar. Any thoughts on this? I also read that you need to have your parameters balanced before you start. Is 340 pmm Ca and 5-6 dkh balanced?