I prefer the Balling Method over the RHF Two Part as it allows your magnesium to be better controlled. IME one of the keys to maintaining a healthy reef is stability of all the parameters. Magnesium is important for allowing the calcium and carbonates to be maintained at the proper levels. It is also a very important mineral in biological processes of life. Therefore keeping it stable is something to strive for. Adding a dose of Magnesium once a week does not do this. Adding the Magnesium in with the two part solutions does not allow individual control of the Magnesium levels. There are times when the coral growth rates slow down or speed up. This can lead to Magnesium being too high or too low as the additions of Calcium and Carbonates increase or decrease.
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