Calcium reactor help

[daplatapus]

Well, since I've bought this 210 gal I'm thinking I'll need to go to a calcium reactor instead of dosing. But I know nothing about them. I hear some people complain about them plugging up, I hear some people say set them and forget them.
What is your experience? Am I thinking right that this is a more economical route?
If/when I'm ready to purchase, what features should I be looking for, in regulator, tank, media etc?
Just how hard are these to set and maintain?

Any thought would be greatly appreciated.