WMAS Discussion Forum : Air intake for my overflow http://www.utahreefs.com/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 18 Jul 2026 19:47:47 +0000 Tue, 29 Mar 2005 13:35:26 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.03 360 www.utahreefs.com/forum/RSS_post_feed.asp?TID=5952 <![CDATA[WMAS Discussion Forum]]> http://www.utahreefs.com/forum/1by1.gif http://www.utahreefs.com/forum/ <![CDATA[Air intake for my overflow : Slurpy and gurgly is fine for...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59301&title=air-intake-for-my-overflow#59301 Author: fj40fax
Subject: 5952
Posted: March 29 2005 at 1:35pm

Slurpy and gurgly is fine for the office, it is muted quite a bit from the stand, and just sounds like a nice "water feature."

Fax
]]> Tue, 29 Mar 2005 13:35:26 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59301&title=air-intake-for-my-overflow#59301 <![CDATA[Air intake for my overflow : Ok... It&#039;ll work as you have...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59300&title=air-intake-for-my-overflow#59300 Author: jfinch
Subject: 5952
Posted: March 29 2005 at 1:16pm

Ok...  It'll work as you have it.  The level will increase (you won't know how much until you try it).  It'll be slurpy and gurgly through.

]]> Tue, 29 Mar 2005 13:16:24 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59300&title=air-intake-for-my-overflow#59300 <![CDATA[Air intake for my overflow : Noise is not a problem because...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59293&title=air-intake-for-my-overflow#59293 Author: fj40fax
Subject: 5952
Posted: March 29 2005 at 12:25pm

Noise is not a problem because my stand is completly enclosed, and noone sleeps in my office.  I am more concerned about being able tomove more water without raising the water level in the tank.  Thesize of my tubing (1" ID) should be able to move quite a bit.  Idid not notice a difference in water level when I switched from a rio2100 to a rio 2500, but I am concerned about going up another 50% inpump volume (to a mag 9.5).

I guess my real question is: If I get a much bigger pump will it change my water level?

Thanks,
Fax
]]> Tue, 29 Mar 2005 12:25:20 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59293&title=air-intake-for-my-overflow#59293 <![CDATA[Air intake for my overflow : The durso design can drain a tremendous...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59292&title=air-intake-for-my-overflow#59292 Author: jfinch
Subject: 5952
Posted: March 29 2005 at 12:15pm

The durso design can drain a tremendous amount of water and have silent operation.  As an example (I'll make it short and leave out most of the part where I was LAZY ):  I have two (1 inch) overflows in my tank.  Last month I noticed that the water level in the tank was a tad high (normally it's only about 1/8" higher then the overflow weir).  I found that one overflow was completely plugged off with algae (mostly that really small bubble sized valonia) and the other was mostly open.  Well I was busy with something else and didn't do anything about it.  Over the past weekend I noticed a little bit of water along the bottom brace of the tank.  The water level had risen to the point that water was slowly leaking out of a poorly siliconed top brace.  I was about 1/4" from overflowing my tank .  The one remaining overflow was restricted to a hole about the size of a nickel and the durso was still more or less working (my return pump is a Velocity T4, 1400 gph).  That's a lot of water to drain down a hole that small.  Anyway, sorry for the diversion, back to your questions.

So what is the critical element?

Durso's work so well because they are essentially a controlled siphon.  Your drain is open in the tank so can not be "dursofied" and will be very difficult to quiet, imo.  The concept is simple, but much easier to explain in conversation (mainly because I don't have time to write it all down).

]]> Tue, 29 Mar 2005 12:15:46 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59292&title=air-intake-for-my-overflow#59292 <![CDATA[Air intake for my overflow : So what is the critical element?...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59283&title=air-intake-for-my-overflow#59283 Author: fj40fax
Subject: 5952
Posted: March 29 2005 at 11:33am

So what is the critical element?  Is it the size of thehole/amount of air, or is it the length of tube inside the drain? I drilled a small hole yesterday, and put in a connector for a 1/4" odtube, and did not notice any difference.  If I blow into the tube,I can blow hard enough to make it so it no longer sucks air from thetop, and if I blow harder, it will back up the drain so it cannot drainenough water.

Fax
]]> Tue, 29 Mar 2005 11:33:25 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59283&title=air-intake-for-my-overflow#59283 <![CDATA[Air intake for my overflow : It could also be done by drilling...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59124&title=air-intake-for-my-overflow#59124 Author: Mark Peterson
Subject: 5952
Posted: March 28 2005 at 10:52am

It could also be done by drilling a hole in the top of the outside elbow and glueing (silicone?) a length of tubing with an adjustable valve to allow just the right amount of air to go down. Note, that the end of the tubing must be positioned above the tank water level.

The durso principle, if one may call it that, actually allows more water to fall down the overflow pipe.

Amazing...the technology exists, all one need do is ask!

Edited by Mark Peterson]]> Mon, 28 Mar 2005 10:52:08 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59124&title=air-intake-for-my-overflow#59124 <![CDATA[Air intake for my overflow : The durso design is the key here....]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59123&title=air-intake-for-my-overflow#59123 Author: Mark Peterson
Subject: 5952
Posted: March 28 2005 at 10:47am

The durso design is the key here. If you haven't heard of the Durso Standpipe just do a search here or on the www.

The Elbow on the outside should be a Tee allowing for a short length of pipe with a hole near the top so a cap can be adjusted to make the hole just the right size to allow air down and still stop the noise. (JFinch and I have both made modified durso's that are straight space saving designs without the elbow of the original design.)]]> Mon, 28 Mar 2005 10:47:44 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59123&title=air-intake-for-my-overflow#59123 <![CDATA[Air intake for my overflow : I cannot change the design. It...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59122&title=air-intake-for-my-overflow#59122 Author: fj40fax
Subject: 5952
Posted: March 28 2005 at 10:42am

I cannot change the design.  It is kinda like this, with the tankgoing between the parenthesis.  If you tilt your head 45 degreesto the right it is just right.  I will take a pic when I get tothe office in a bit.

(
 )

Fax
]]> Mon, 28 Mar 2005 10:42:18 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59122&title=air-intake-for-my-overflow#59122 <![CDATA[Air intake for my overflow : Can you change the design if need...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59118&title=air-intake-for-my-overflow#59118 Author: ewaldsreef
Subject: 5952
Posted: March 28 2005 at 10:36am

Can you change the design if need be? I guess it is hard for me to picture from the description.]]> Mon, 28 Mar 2005 10:36:27 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59118&title=air-intake-for-my-overflow#59118 <![CDATA[Air intake for my overflow : I have a question about my overflow....]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59115&title=air-intake-for-my-overflow#59115 Author: fj40fax
Subject: 5952
Posted: March 28 2005 at 10:30am

I have a question about my overflow.  It is just an ABS street Lglued through the back to another regular L to make an S shape. Right now it has to suck air in at the water level, which is fine, butI would like to add more flow.  I am concerned that if I add moreflow it will not be able to suck enough air and will overflow thetank.  I have room directly over the street L that is inside thetank to drill a hole for a breather tube.  My question is how doesthe breather tube affect the water level, and if I put a breather tubein will it allow me to run more water?

Thanks,
Fax
]]> Mon, 28 Mar 2005 10:30:19 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5952&PID=59115&title=air-intake-for-my-overflow#59115