I'm gonna take my other question as a yes. I am trying a bucket of Red Sea Coral Grow Plus Salt, or something like that. All my levels come out how it says on the bucket. It works great for me. It is possible to get a bad batch of salt though. A good thing to do is alternate salts. When you finish a bucket of one brand, go a buy a different brand ect. This way where one salt lacks you make it up with another one.