Now I can see the problem.... you need an elbow inside the overflow box.
A Durso or Stockman creates silent flow by drawing the water into the pipe under the surface... get an elbow in there facing down & crank that Mag to 100%... they won't last long running with back pressure anyways...
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135G Mixed Reef. Bullet 2, 25 gal refugium, 2 X250W MH + 4X 96W PC\'s, DIY Calcium Reactor, Coralife 1/6 HP Chiller, Phosban, Tunze, 2 closed loops & SQWD\'s, Seios, Coralife 4 stage RO/DI & a bunch of other expensive gadgets... I may never retire, but I'm gonnahavahelluvanaquarium!
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