What kind of bubbles are they like micro bubbles ? Are you running a skimmer? It could be bubbles from too much flow through the sump or I have seen a poorly glued fitting with the water running past it wasn't leaking but would pull in air. That I see the mag is at 950 gph it could be too much turnover through the sump they recommend usually 3 to 5 times. The thought behind this is the water is flowing too fast for bubbles too settle out and can become turbulent. Do you have a ball valve on the return ?
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank
Last edited by BlueTang<3; 01-09-2013 at 02:21 AM.
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