I have been testing my mag to see what my level sits at and I am consistently sitting at 1160. I have been reading that your mag should be at a cretin level compared to your SG. My SG is 1.025 which by what I am reading my mag should be at 1270. as far as my other parameters. I keep my Ca @ 440-450, Dkh 10, and Ph 8.3-8.4. If I am going to start using mag supplements what should be my target range and which supplement is good.