All-For-Reef Ca/Alk good MG HIGH?! (1500)

[lukestrothman]

I am dosing 10ml a day of all-for-reef which seems to keep my alk right around 8-8.25 and calc around 450 quite well, for a few months now. However, MG is always 1480-1520 it seems... I should probably validate that with an actual tester and grab a Hanna to compare since I'm basing this on a trident, but curious if I should go another route than All For Reef? Tank is still quite immature, but there are many corals. The days I don't dose, I do see a calcium and alk drop, but MG is consistently around the higher 14's and sometimes creeps past 15.

 

[BanZI29]

For now, you should be OK. As long as it doesn't get much higher. As long as your corals look happy. do keep an eye on it though.
as for a tester, you should use the Aquaforrest mag tester. that is the one I use and it has been the most accurate of all the ones I have used, including hanna.

 

[lukestrothman]

For now, you should be OK. As long as it doesn't get much higher. As long as your corals look happy. do keep an eye on it though.
as for a tester, you should use the Aquaforrest mag tester. that is the one I use and it has been the most accurate of all the ones I have used, including hanna.

Appreciate that, thanks.

 

[Reefer911]

Not sure about the Aquaforest tester but Salifert is also reliable. Quick and easy

 

[gbroadbridge]

I am dosing 10ml a day of all-for-reef which seems to keep my alk right around 8-8.25 and calc around 450 quite well, for a few months now. However, MG is always 1480-1520 it seems... I should probably validate that with an actual tester and grab a Hanna to compare since I'm basing this on a trident, but curious if I should go another route than All For Reef? Tank is still quite immature, but there are many corals. The days I don't dose, I do see a calcium and alk drop, but MG is consistently around the higher 14's and sometimes creeps past 15.

Unless you're seeing some problem I wouldn't worry about it.

Mg tests are notoriously unreliable and could be off by 150ppm or more anyway

 

[michealprater]

You should be fine, all for reef wont raise mag, just maintains it.

 

[gbroadbridge]

Not sure about the Aquaforest tester but Salifert is also reliable. Quick and easy

Are you using the new or old version?

The new version only has Mg-1 and Mg-2 reagents.

 

[Randy Holmes-Farley Verified Community Expert]

I am dosing 10ml a day of all-for-reef which seems to keep my alk right around 8-8.25 and calc around 450 quite well, for a few months now. However, MG is always 1480-1520 it seems... I should probably validate that with an actual tester and grab a Hanna to compare since I'm basing this on a trident, but curious if I should go another route than All For Reef? Tank is still quite immature, but there are many corals. The days I don't dose, I do see a calcium and alk drop, but MG is consistently around the higher 14's and sometimes creeps past 15.

AFR contains

43000 ppm calcium,
1900 ppm magnesium

That’s not a particularly excessive amount of magnesium for a typical reef tank. Coralline would use more than that ratio.