Well, I'm planning for a 4-day holiday and ordered a Jebao DP-4 dosing pump for the frag tank.
My alk consumption is a bit all over but I think about 10ml per day covers it.
I bought the 4 channel doser because it was cheaper than the 2 or 3 (oddly).
I like the placement of my tanks but they're too far apart to use the same doser.
Another interesting point is that my phosphates have zero'd out in both tanks...which I'm not sure why. GSP and dendros were first to react, ie close up.
I've usually spot feed a combo of reefroids & goniopower but have been broadcast feeding the last couple of days.