Comments on: Salt water aquarium wont stop making a cyclonic noise in one of its returns. Any ideas on how to stop this?

By: Frank m

Frank m — Tue, 03 Nov 2009 16:35:59 +0000

This is common in overflow boxes. The drain is sucking air. Moving the hose will have little to no effect. You need a durso drain pipe in your overflow box. Very cheap and easy to build. about 10 bucks in plumbing parts, and you do not have to glue it together. The link provided gives the instructions on how to do and you can buy it here as well.
http://www.dursostandpipes.com/?page_id=6

Never put a valve on a drain line. NEVER, it makes a trap for snails or large pieces of algae that WILL get stuck in the partially closed valve and flood your tank!!!!!
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15 years of reef keeping. 30 years fish keeping.

By: Rohn

Rohn — Tue, 03 Nov 2009 15:54:59 +0000

In the hose leading to the sump (or trickle filter), put ball joint. For some this prevent this cyclone effect you talk about. -rds
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By: zachary.melo

zachary.melo — Tue, 03 Nov 2009 15:04:59 +0000

if this is a HOB overflow look at a smaller unit, if your tank is drilled however look into a durso, or google gurgling overflow or something to a similar effect. i don't know what your options are for more holes or modification so i can't help too much. the least modification required would be to install a ball valve with a backup on the overflow so less air will be able to get in. if you provide mroe details i could help more.
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