Zoas growing but checked Magnesium and Alkalinity are questionable?

[artsharris]

I got a Red Sea 250 Reefer Deluxe 5 months ago. Cycled it and all seems well. I am still learning as I go. I am fairly new to having a reef tank but very cautious and want to make sure I do as much possible to keep the water and tank within the parameters suggested. I measured my magnesium tonight and it was right at 1600 with the red sea tester and I tested alkalinity at 6.4 with the Hanna Checker. These are out of the suggested parameters. Do I need to adjust these and is there documentation somewhere how to handle. I do a water change each week with RO/DI water mixed with Red Sea Pro Coral Salt. All other measurements were within range. Thanks,

 

[Robert_ellis]

How is your coral load and do you dose?

 

[Ben little79]

Hello.. Wondering what is calcium level..