Would you consider 2xMP10? I went the MP10 route but was also considering the Gyre. I think the Gyre has better patterns but I went with the 2xMP10 for a few reasons:
- Integration with my Apex. I have a pushbutton "feed mode" and it reduces the powerhead flow. Then for the last 5 minutes, it goes into "nutrient export" mode. The Gyre cannot be fully controlled with a Neptune Apex I think.
- The battery option. I ended up making my own battery backup (twice the capacity, half the cost). UPS are terribly inefficient doing DC->AC then back to DC for the pump. The MP10 can be powered directly from a 12V battery and last for days. It also switches on automatically when there's a power outage
- No wires in the tank. No salt creep on the wire, nothing can nibble on the cable, 0 chance of having stray voltage in the DT
- No motor in the tank.That means no heat in the DT (I live in California and Summers are challenging).
- Cleaning. We never clean as much as we should and 90% of the reason is the annoyance of disassembling something. The wet side is attached magnetically so it can be removed from the tank in a millisecond. Then opening the wet side to expose the propeller takes 1 second (a 1/8 twist). I'm pleasantly surprised with myself on how I've been able to clean 1 powerhead per water change and not be annoyed. Now please don't ask about my other items that are more annoying to disassemble
So with all these pros, I went with 2x MP10. I went with 2 for the redundancy since it's so critical to the survival of the tank.