how to raise magnesium

[arnald]

thanks to everyone I guess I just need to raise the calcium cause it is at 150 and the hard corals are almost dead. i will try the suggestion from everone thanks again.

[arnald]

so i get some baking soda and just add it to the aquarium straight up. baking soda? the cooking kind. and that should raise the calcium level

[xtreme]

Baking soda will raise your alkalinity. You need a calcium supplement of some sort to raise it.

[arnald]

done thanks guys