I’m currently using Red Sea mixed reef salt on my 32g AIO tank. I have my first coral coming next week. Trying to decide what kind of supplements I will need moving forward. Red Sea makes an A, B, C. Seachem has a Reef Complete. There are a few other solutions too. Not sure what is more popular or needed. Kalkwasser seems to be very popular but my concern is about the other nutrients like Mg. Suggestions?