ALK and CA depletes rapidly, seeking advice.

I guess my tank has hit a tipping point where the Ca and Alk demands exceed the rate at which my calcium reactor operates.
I am wondering what to do about it.
1. Increase the output of the Ca reactor? Currently I run it at 100 drops per minute with a steady stream of effluent (6.7 ph output) This seems like a lot to me. Is anyone running their Ca reactor 'faster'?
2. Continue supplementing every two weeks? Currently I am meeting tank demands by dosing BRS CA and ALK dry powder supplements every two weeks or so. I always follow directions which means it may take three days to bring the ALK up safely. Total pain in the ***.
3. Buy a doser? I'm not sold that these things are reliable. How much maintenance is involved with dosers?
4. Kalk reactor? Not sure how much kalk I can safely dose in addition to my Ca Reactor. Is there a Kalk calculator out there? I would prefer to run a calk reactor using direct feed top off water. (I know dangerous...) If I go this route can I saturate all my top off water with calk or should it only be some, a little?
Anyone out there with a big tank that can give me some advice?