Confident would be an understatement.
Right now i'm just running carbon. My nitrates are pretty much undetectable and po4 is still within reason.
So the other two are empty and I don't even have the biopellet reactor yet.
The CaRx is a LifeReef too.
If you go this route, definitely plan on either getting the Aquarium Plants Carbon Doser or look into building a high quality two stage regulator.
How to build a CO2 regulator for your calcium reactor. - Reef Central Online Community
I had issues with dialing in the regulator he sent me with the needle valve. Way too touchy.
And I had terrible time trying to get the Coarse ARM media to dissolve. Finally switched to Two Little Fishies REBORN media and this made all the difference.
Now I ditched the little RIO feed pump and run a Cole-Parmer Masterflex pump for ultimate control/consistent effluent flow.
This is a great thread on that.
Official: Masterflex Calcium Reactor Setup Thread - Reef Central Online Community
Here's my setup. The clear tubing on the right runs to the barbed fitting in the side of the sump. That's the effluent output line.
The Co2 tank is located outside the fish room, just on the other side of that left wall.