The 300 gyres and the octo pulses are weird. I have heard both be loud, and both be very quiet. My Pulse 4s are pretty quiet. Maybe it has to do with break in like you are finding with your gyres.Flow seems to be good, I'm still using OGC mode. I'll give it a few days and see if there's any detritus piling up and adjust from there. In addition to cleaning them, I replaced the bushings. I forgot how loud these can be until broken in...maybe I'll look at the gyre 300s or Reef Octopus Pulse 2.
My Pulse 4s are somewhat narrow for longer tanks, but I think the Pulse 2s are wider. I don’t have any Pulse 2s so I can’t compare directly. Maybe someone else has them and can compare?How wide is the flow on the pulse? I've had Tunze, Ecotech, Jebao, and Sicce in the past, and I think I like the gyre's wide flow pattern the best.
Part one of the cleanup is complete, Alkatronic, Dosetronic, and dosing containers all inside the stand now. I’m so glad I had @Tankme USA put that divider panel in. I used PVC board from Lowe’s to make the shelves.
@MarineDepot controller board is mounted to the wall, GHL stuff should be here next week. I still need to figure out where to mount the ATO and run the line from the garage RODI reservoir through the attic down to the tank.