1) Easily. Especially if you have a second chamber to "offgas" any excess. I use a single stage and haven't had any issues with it. My current pH fluctuations in a 20G tank is currently 8.11 to 8.36. On a larger tank your pH fluctuations is gonna be less than that, but hard to say if the space where your tank is located doesn't get any fresh air with like a ton of people in there excreting co2 (different issue to a degree). Even with the windows closed, I'm seeing values of 8.0 - 8.25.I
I appreciate this thorough response.
1) Is it possible to run a CaRx and maintain PH above 8?
2) What are the equipment pieces that you would consider the most important to ensure the unit is operating effectively?
3) Are there any redundancies worth considering?
4) Roughly 40% of my dosing happens between 9pm and 7am to maintain calcium and alk. I assume under that structure I would leave the feed pumps and doser on, correct?
Thank you again for taking time to draft that response.
2. A decent regulator and a feed pump that's consistent. The reactor not so much so since there's a bevy of options out there and if you know what to look for you don't need the kitchen sink of a reactor.
3. Possibly a backup feed pump or a secondary co2 tank. Feed pump for if and when you need to switch out your dosing lines or a head replacement and the secondary co2 tank when you run out of co2 and the location that you typically refill your co2 tank at is closed for the weekend. Both are really easy to work around.
4) You're probably looking at 90% of the dosing during those times versus 40% if those are your typical photoperiod. If you're only looking at 40% currently, then maybe take a look at your program again since most corals consume the needed big three during the photoperiod instead of 24/7. You would definitely feed the tank during your photoperiod versus outside of those hours.