mag is ridonk high

[beginnerreefer2003]

hey guys! I’ve been using red sea blue bucket and red seas titrations for testing and my magnesium is just always high
The lowest it’s been since I started two months ago is 1320 and I wish it were that but right now literally a few days after a water change it’s sitting at 1520! I’m worried for my inverts so please tell me it’s not harmful to them

other levels are:
temp- 26°
salinity- 1.026
ammonia- 0
nitrites- 0
nitrates- 3
pH- 8
cal- 450
alk- 6.8 (I know this is low but it’s stable- has always been 6.8 over the last two months despite adding different things with buffers like sands and rocks and coral rubble so i’m just going with it)

look at my cutie cleaner shrimp in the comments

 

[beginnerreefer2003]

 

[afboundguy]

I wouldn't worry about 1520 for magnesium. It's not ideal but I've had magnesium at 1500+ without issues and it goes down eventually. You could switch up salt mixes but if the tank is looking ok I wouldn't worry too much about that reading...

 

[Randy Holmes-Farley Verified Community Expert]

I would not assume it is accurate. Magnesium tests frequently are not. It does not rise in its own. Your magnesium likely matches the salt mix and is likely fine.

Try measuring the magnesium in your new salt water.

This provides an alternative to testing it at all:

https://www.reef2reef.com/threads/just-say-no-to-magnesium-testing-rmm-is-born.1017528/