Wow, purchased a couple IceCap Gyre 4k's on black Friday weekend. These pumps are great! I can't believe there isn't more discussion about them online, other than negative comments about the original App. I installed two on a Red Sea Reefer 450. The pumps move plenty of water in a 5 foot tank on alternating sine wave mode. The app took a while to figure out, but not because it's flawed - only becuase I didn't understand how to get the pumps going. It's necessary to setup triggers, presets and modes. The pumps at 100% are dead silent - only the sound of moving water. In my Reefer 450 there is constant moving water from end to end and smooth movement across the bottom. It would be great if other users shared their preset schedules.
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