Magnesium and Alkalinity levels

[Knarf]

Hello everyone,

I am wondering if anyone knows the safe magnesium and alkalinity levels are supposed to be in a 75g with a 29g refugium and what I have to do to adjust safely and accordingly and to keep them at a good level?

 

[BackInTheTank]

How about in a 8 gallon reef as well. Thanks for posting this . I was just about to ask . Best lvls to have my 8 gallon at mag and ALK . And best ways to raise them both and lower the if needed to.

 

[gpdno]

I run magnesium at 1350 ppm
Alk at 8 dkh
Calcium 420 ppm

 

[Knarf]

Gpdno, what do you have in your tank as far as corals? How do you keep it maintained at that level

 

[gpdno]

I dose daily using my Apex and BRS dosers. Basically, I measured my Magnesium, Alk, and Calcium. I waited one week and checked my levels again. From that I know what my weekly consumption is and then divide by seven days. This is my daily dosing. I check my levels every week and make minor adjustments as needed.

Gregory

 

[Knarf]

Oh ok thanks Gregory, I really appreciate the info it's a big help!

 

[NanaReefer]

First you have to find out how much of each is being used up. How much of a drop are you seeing on a weekly bases? Only way to doing this is by testing daily. Then if dosing is required you go from there.
Most times regular water changes is a sufficient way of replacing depleted elements. Most tanks that require dosing are those with a lot of SPS & LPS.