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[daplatapus]

I'm running a basement sump with 14'' of head and about the same horizontally feeding 2 tanks, a 77 and a 20. Right now I'm running a Reefflo Barracuda and its plenty of flow for those tanks. My only complaint is the vibration humming through the floor. I've got spa flex isolating it from the hard PVC piping and its sitting on a 6" block of foam. Every place the piping is touching a floor joist I have a piece of 1/2" pipe insulation, but it's still there.
My 210 upgrade is coming up... I bought 2 Waveline DC12000's to feed it. I've got other DC pumps, Waveline and Jabeo and they are super quiet. As time has progressed it appears there are reliability issues with them. I've got all new controllers for them so I'm trying to stay optimistic that they'll work. But I have drill a 2" bulkhead into my new sump and plugged it if I have to go back to a Reefflo external pump.
For my 210 build I've gone to 2 - 1" main drains both with gate valves at the sump. It's apperantly much harder to control if the gate valves are located upstairs.
Then I've run a 1 1/2" emergency drain and 2 - 1 1/4" returns. Each of my returns run across the length of my tank, 1 across the front, one across the back. They each have 3 - 3/4" loc-lines coming off them. After the first 3/4" line comes off the 1 1/4" I reduced to 1", then after the second came off, I reduced to the last 3/4".
I may still install the loc-line valves to balance each of those further if I need to.
Ask away if something there isn't clear.