Magnesium dosing with water change

[Jason Donohoe]

According to the online calculator I need to add aprox 2100ml of Randy's DIY magnesium supplement to bring my levels up.

Can I add this volume to 15 gallons of newly mixed salt water and add it over 3 water changes?

Will it percipitate anything out of solution?

Thanks.

[iamwrasseman]

why not ,seems like the right thing to do but you dont want to raise more than 50 ppm per day so take that into consideration.

[Billybeau1]

Yes you can. You should be able to add a max of 100 ppm per day without issue.

That is probably not going to happen in your case. :)

[Jason Donohoe]

Thanks for the advice but I decided to dodge the issue entirely and I am currently dripping the magnesium into the sump. I am adding aprox 1/3 of the volume I need and it should raise the magnesium between 50 and 100 ppm.