Need help with Mg dosing

[VelasCorals]

I'm trying to figure out how to keep my Mg at 1400 on a 200 gallon total water volume system.

On 9/18 my Mg level was 1400
On 10/23 my Mg level was 1100

Over 35 days my Mg level dropped 300ppm.

I use ESV Mg.

I have two questions.

1. What do I need to dose to get back to 1400ppm?

2. What do I need to dose to stay at 1400ppm?


I understand that 200ml will raise the Mg level back up to 1400 but after I get it to 1400 what do I dose on a daily basis to keep it there? I'm terrible with math and my brain hurts. Thanks!

 

[CJO]

If you need 200 ml to get back to 1400, that means that, in the future, you need to spread that out over 35 days. 200 ml / 35 days = 5.7 ml / day

CJ

 

[VelasCorals]

Thank you!

 

[tinctorus]

You should setup a dosing unit to add 5.7Mls over the course of each day in order to maintain your MG at the level you want/need it at, It's much better to add a small amount each day as opposed to a massive dumping dose once a month, the corals will prefer the stability as well and will grow much better

In reef keeping the key to a successful tank is STABILITY!!!
You would have a better tank with calcium that stayed at 420 and Mg that stayed at 1200 than you would with a tank where there levels dropped down to 400 and 1200 and then were SHOT up to 500 and 1400 once/twice a month

That has typically been my experience in 15 years of doing this... stability, stability, stability