magnesium questions

[fishguy597]

whats the difference between mag chloride and sulfate. Is it better to mix the two and if so to what ratio?

 

[pitako8]

You need 5 parts MgCl to 3 parts MgSO4. If you are dosing Kalk, you're best to use 10 parts MgCl to 1 MgSO4.

You can post at Reef Chemistry forum for more info.

 

[Randy Holmes-Farley]

I discuss such additives in detail here:

Do-It-Yourself Magnesium Supplements for the Reef Aquarium
http://reefkeeping.com/issues/2006-07/rhf/index.php