I love my BRS/apex combo + you can dose slowly over a 24hr period and you can go on vacation,stay late at work,go to you LFS and not have to rush home to dose.
+1 apex with BRS dosers is great. now my pH is rock solid and i use the apex to implement fail safes.I use only 2 dosers because my magnesium levels do not move enough to have automated dosing. water changes and a small weekly dosage addition keeps mag in check
No currently I'm just dosing for Alk & Ca my Mag is currently stable and not needed Mag you can dose all at once if it's low so I'm not worried about it now. I figured I'd test Mag once a week and add if needed. If it becomes something in
The future that I need to dose daily I will add another BRS dosing pump.