Low magnesium with Two parts dosing

[fernandodal]

Hi,

I have been using the two parts recipe Alk and Calc for the last four months. The tank has been up and running for two years and I have made water changes twice a month using Aquavitro salt. Never added magnesium.

My Mag is at 1120, measured with Salifert test.

Apart from the Mag stock solution that must be added to keep sulfates balance, can I use the two parts magnesium recipe 7 1/4 Mag Flake and 3/4 Epsom salt? Will It cause an imbalance and should i use the same amount of Alk and Calc I'm dosing dalily?


Thanks everybody in advance!!!

 

[Randy Holmes-Farley Verified Community Expert]

Hi,

I have been using the two parts recipe Alk and Calc for the last four months. The tank has been up and running for two years and I have made water changes twice a month using Aquavitro salt. Never added magnesium.

My Mag is at 1120, measured with Salifert test.

Apart from the Mag stock solution that must be added to keep sulfates balance, can I use the two parts magnesium recipe 7 1/4 Mag Flake and 3/4 Epsom salt? Will It cause an imbalance and should i use the same amount of Alk and Calc I'm dosing dalily?


Thanks everybody in advance!!!

That recipe is perfect for making magnesium boosts.

How low is it?

 

[fernandodal]

Wow! Let me say it is a honor to receive an answer from you Mr. Holmes. I have followed tour articles since I began reefing back in 2007.

At the the moment, it is at 1120. Could It cause my LPS to recede?


Many thanks and best regards from Spain!

 

[Randy Holmes-Farley Verified Community Expert]

lol. Thanks.

It would be unusual to be that low and magnesium testing is frequently in error. The Red Sea kit especially has issues. So be sure to confirm it somehow before making a correction that big.

 

[Randy Holmes-Farley Verified Community Expert]

What salt mix and what salinity?

 

[fernandodal]

Ok, let me do that first, I will post the results.

 

[fernandodal]

Seachem Aquavitro and 1025.

 

[Randy Holmes-Farley Verified Community Expert]

I’d be sure to double check the level before dosing. [emoji3]

 

[fernandodal]

I have tested four times using Salifert, average 1190.

Should I increase my Mag a bit up?

 

[Randy Holmes-Farley Verified Community Expert]

I mean double check with a different kit. But upping the magnesium by about 100 ppm is an ok plan since even if it is already normal, bring higher is also ok.

 

[fernandodal]

I will try to check with a different brand. Thank you very much for the replies

 

[Randy Holmes-Farley Verified Community Expert]

You're welcome.

Good luck