Brightwell magnesium

[gabesreef]

So I’m new to this but something is definitely off with the brightwell magnesium. I have a 150g tank and hardly any hard corals mostly soft corals and some LPS frags. I’m only using 5ml of ESV alk and about 15ml of calcium. I’m trying to get my mag levels up I’m at 1322 I’ve been increasing my dose everyday I’m at 30mls and it still hasn’t budged. Is this stuff super weak? I bought a 500ml bottle this stuff won’t last 10 days at this rate….

 

[rtparty]

It takes a ton of magnesium supplement to move it up. Here’s a better way to go

Just say NO to magnesium testing: RMM is born

OK, this thread has been many years in the making, and I'm posting it here since folks in the chem forum are probably already tired of all the threads relating to problematic magnesium testing. I'm going to propose a method, let's call it the Randy Magnesium Method, or RMM for short. All good...

www.reef2reef.com

 

[KStatefan]

So I’m new to this but something is definitely off with the brightwell magnesium. I have a 150g tank and hardly any hard corals mostly soft corals and some LPS frags. I’m only using 5ml of ESV alk and about 15ml of calcium. I’m trying to get my mag levels up I’m at 1322 I’ve been increasing my dose everyday I’m at 30mls and it still hasn’t budged. Is this stuff super weak? I bought a 500ml bottle this stuff won’t last 10 days at this rate….

500 ml will raise your 150 gallon tank about 85 ppm

 

[Randy Holmes-Farley Verified Community Expert]

As noted in the article above, testing of magnesium at home to guide dosing is too fraught with errors to be optimal. I'd stop measuring it for now.

 

[gabesreef]

So I have the trident it’s automatically testing my mag twice a day and you can’t buy the replacement reagents individually so I guess I’m stuck testing it for now lol but I guess the number isn’t really that important? I’ve always been told that euphylli corals love high mag…. That’s why I was dosing it I plan to have lots of hammers, frogspawn and torches

 

[get-salty]

I dont see no real difference when my mag at 1250 and at 1450. As long as you're doing WC, w/e mag level comes in your salt should be more than enough.

 

[Randy Holmes-Farley Verified Community Expert]

So I have the trident it’s automatically testing my mag twice a day and you can’t buy the replacement reagents individually so I guess I’m stuck testing it for now lol but I guess the number isn’t really that important? I’ve always been told that euphylli corals love high mag…. That’s why I was dosing it I plan to have lots of hammers, frogspawn and torches

Dose Mg in relation to calcium dosed, not a test result, and dose new salt water higher if you are convinced it is useful.