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#1
09-06-2009, 08:30 PM
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Sounds like the air hole. Either needs to be a little larger, or it's getting covered with salt creep?
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Dan Pesonen Umm, a tank or 5 
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#2
09-06-2009, 08:55 PM
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Maybe I'll try enlarging the hole a bit. It's not salt creep as I just finished getting my salinity to 35ppt today (only added water yesterday) so I have a month or so to play with it.
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#3
09-06-2009, 09:26 PM
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I have duel overflows on my tank and one or the other will do that if I have the end of the pipe that emptys into the sump totally underwater. I cut a bit of a slot out of the pipe and have the top of the slot a little above the surface and that seemed to sure it
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#4
09-06-2009, 10:23 PM
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Actually both of my discharges are under water in the sump. I opened up the air hole to 1/8" and so far so good. I guess I'll have to look at putting my hoses above the water but won't this be a lot noisier?
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#5
09-07-2009, 01:58 AM
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The one overflow is still making that flushing sound every hour or so. I drilled a hole in the line above the water in the sump see how this goes. I figure the other overflow isn't doing this because the line travels all the way across the tank to empty into the sump so it has more head pressure.
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