Flow through sump.

Kworker

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I have been having issues with microbubbles in my tank. I think its mainly because I was running above my Skimmers pump (250gph) Reef octopus nwb-110.

For a bit i was running two rio1100's with minor bubbles most of time, but than other portion i have major bubble issues.

Right now im running only one rio1100 with virtually no bubbles. at 3 feet its rated for 236, at 4 feet 180.
Honestly i do not understand why there are bubbles at all with the two 1100's running. With the headloss plus 2 90 degree elbows and 1 45 degree i feel with the both running the flow should be fine with my skimmers pump.

I have asked for assistance in regards with two pumps before but this is kind of a refreshed question. I siliconed all of areas where elbows are. No venturi effect. Especially since bubbles only increase and i increase GPH through sump.
That thread is located here: https://www.reef2reef.com/forums/eq...0-two-pumps-too-much-microbubble-problem.html

I honestly am starting to regret going with a sump.
 

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