Water change questions

[reefwithareefer]

Originally Posted by Aquattro

As far as I know, nothing but water evaporates. So top off is just returning to the previous state.

I haven't read Randy's stuff, it tends to take the fun out of this hobby for me. Apparently he likes adding Mg I'm happier doing large changes, and it's always worked, so it's what I do. I've seen nice tanks that do small daily, so I guess it can work fine. I dunno.

I guess that is what makes this hobby interesting, seeing how everyone does everything a little different and seeing the results.

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.