Brightwell Magnesion Overdose!!

[Manose]

I use AFR and have to add stuff every now and then like calcium or alk.
I have Brightwell Magnesion and it says to dose
tank gal x ppm increase x.03785 = ml of product to add

My magnesium tested 1305 and had been testing 1320 about a month ago, so I have a 100g total water volume and want to bing it up 15 points so
100 x 15 x .03785 = 56ml

I goofed and put 80ml into the tank so have I killed my tank and whats gonna happen?

 

[Randy Holmes-Farley Verified Community Expert]

It's no concern. Magnesium won't rise much. :)

 

[Manose]

It's no concern. Magnesium won't rise much. :)

Whew I was so worried!!! Thank you!!

 

[Randy Holmes-Farley Verified Community Expert]

Whew I was so worried!!! Thank you!!

You're welcome.

Happy reefing. :)

 

[KrisReef]

I use AFR and have to add stuff every now and then like calcium or alk.
I have Brightwell Magnesion and it says to dose
tank gal x ppm increase x.03785 = ml of product to add

My magnesium tested 1305 and had been testing 1320 about a month ago, so I have a 100g total water volume and want to bing it up 15 points so
100 x 15 x .03785 = 56ml

I goofed and put 80ml into the tank so have I killed my tank and whats gonna happen?

Your heart will race until you retest. :face-with-tears-of-joy:

Suggestion for future additions.
Do the math, add 1/2 of the solution and retest to see if your addition actually moved the parameter half way to the goal, or not.

Add the rest or not depending upon test results.

This method has helped me avoid drastic overdoses more than a few times. The products may be more concentrated them advertised or I misread or miscalculated the dose needed.

 

[Terrence Cline]

It's no concern. Magnesium won't rise much. :)

Randy I just did the same thing dosing 95 ml and my magnesium was tested at 790 using Red Sea test kit and magnesion brightwell product.

Randy Do you recommend large water change?

 

[Terrence Cline]

You're welcome.

Happy reefing. :)

Whew I was so worried!!! Thank you!!

Please advise how you tank is doing I just did the same think dosing 95ml on my 120 gal with 20 gallon sump. Did you do water change of just test and monitor

 

[Randy Holmes-Farley Verified Community Expert]

Randy I just did the same thing dosing 95 ml and my magnesium was tested at 790 using Red Sea test kit and magnesion brightwell product.

Randy Do you recommend large water change?

To what size tank?

 

[Randy Holmes-Farley Verified Community Expert]

Duplicate thread. No need to answer here.

 

[Terrence Cline]

To what size tank?

120 gal with 20 gallon sump. Did 10% water change as a caution