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Adro1

Need advice with sump gurgling

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Hey guys I know this has probably been done to death but I'm going to ask again. I just filled up my new office tank which is a 4 x 2 x 3 with a 3 foot sump. I have 3x25 mm returns and 1 25 mm coming from a 10,000 LPh sump pump. I have the T pieces at the back of the bulk heads already but I'm getting a surge gurgle about every minute or so. At fish I had the returns under the water but that didn't help. I also have tried a t piece on the bottom end as I've read I will let the air escape and not bubble. But that didn't help either. If I block the top of the top t piece the drainage amps right up to the point of then sucking air because it drops the water level in the tank. Any one got any other ideas???

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The pump is limited already by the amount and size of the holes in the spray bar. Because it pushing the water about 2 metres high the actual flow would be around 8000 lph if I had to guess. Which is cycling the rand about 8 times an hour which is about right for what I'm after.

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I think you need bigger returns. so the water can empty quicker. I had the same problem with my sump, i also added a tee piece in the return and a tap on the end and vented some off the flow and pressure back into the start of the sump HTH.

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