I screwed up...dosed too much MG!!!

[Hvy_Dty]

OK...I screwed up when adding Tech M today. I used the calculator and added 480 mg of Tech M assuming it was the 18.4 version and found out it was the 39.1 version. I needed to raise my Mg from 1200 ppm to around 1300 ppm (90 gal system). How much damage will this do and what should I do to correct it?

Thanks!
Jeff

 

[Randy Holmes-Farley]

It sounds like that would have pushed alkalinity up by 200 ppm instead of 100 ppm, and if true, 1400 ppm is not a big deal. Nothing to worry about. I'd just not add any more for a while.

 

[Hvy_Dty]

LOL...that makes sense!

Thanks!
Jeff

 

[Randy Holmes-Farley]

You're welcome.

Happy reefing.