Water change questions

[Aquattro]

Originally Posted by reefwithareefer

I dose magnesium as my tank was always low. I use IO reef and my mag was around 1000, which messed up my ca and all levels.

My levels were always 1050 forever, no issues with any other levels. The Internet convinced me to try it with my new tank, I see no change/benefit to adding it, other than relieving me of more money.