External Overflow Box - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 06-29-2012, 07:10 AM Thread Starter
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External Overflow Box

I have a nano overflow and it is noisy. The flow has not been measured but I think its around 100 to 150 gph. It has a 3/4 inch bulkhead with a barbed 3/4 inch fitting and then 3/4 inch corrugated flexable hose attached. I tried using 1/4 inch green air line down into the bulkhead and it works only for a short while. What other things can I try to quiet the overflow?
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post #2 of 3 Old 07-26-2012, 05:06 AM
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try doing a google on durso standpipe.
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post #3 of 3 Old 07-26-2012, 07:51 AM
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Agree, the Durso standpipe works very well at reducing the gurgling. I have have one for the wet/dry filter for my 75g freshwater Cichlid tank and it made it silent.

10g Fry / Hospital / QT tank (as needed)

75g Saltwater Reef, Ocellaris Clownfish, Lyretail Antias (baby), Lemon damsel, Longtail Fairy Wrasse, purple dottyback, snails, crabs and a few LPS corals.

220g Still sitting empty (come on Lottery I need the numbers to come up!)
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