2 part vs calcium reactor

[Tecdiverfl]

I have been using BRS 2 part with a medical doser on my 180. I have a large amount of SPS. I have 2 calcium reactors sitting in the garage and debating if it worth the hassel. I have though of converting one into a denitrator

 

[clayspst]

i use two part on my 180 SPS, i could never get my calcium reactor dialed in.

Medical doser? please advise how his works