It's working great. I just topped off my media after 6 months of use. Parameters have been stable. I'm extremely pleased that I switched to a CaRx. If I had the room, I probably would have gone with c-tech 2 for more capacity.
I ended up changing it out for the Kamoer FX-STP pump and it's SOOOOOO much better. I'd say every other day, I was messing with effluent when I was using the Sicce feed pump and now it's been very consistent. So much happier with the Kamoer. Hopefully it'll last a while.