I have a 618 SSE GEO that I am thinking about converting to a single chamber. But, I noticed BRS sells the exact same AquaWiz CARX under another brand. It will be faster and likely not much cheaper to just buy that one. But, the quality isn’t there. I’m a little “hard” on my gear. Perhaps I try and find a used single chamber old school GEO or Deltec.Update, I ordered a T-2 calcium reactor. This design seems to recirculate co2 better. It’s also similar to the “Aquawhiz” calcium reactor. Gonna give it a try with the CRA again. The pH control via Apex is more finicky that I was expecting.

