WMAS Discussion Forum : Drain Size? http://www.utahreefs.com/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 28 Jul 2026 17:23:47 +0000 Thu, 20 Apr 2006 01:10:28 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.03 360 www.utahreefs.com/forum/RSS_post_feed.asp?TID=10475 <![CDATA[WMAS Discussion Forum]]> http://www.utahreefs.com/forum/1by1.gif http://www.utahreefs.com/forum/ <![CDATA[Drain Size? : Alex, I&#039;m looking forward...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=108931&title=drain-size#108931 Author: Mike Savage
Subject: 10475
Posted: April 20 2006 at 1:10am

Alex, I'm looking forward to seeing those pictures. ]]> Thu, 20 Apr 2006 01:10:28 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=108931&title=drain-size#108931 <![CDATA[Drain Size? : I ended up going with(2) 3/4&#034;...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=108882&title=drain-size#108882 Author: meterman
Subject: 10475
Posted: April 19 2006 at 9:35pm

I ended up going with (2) 3/4" returns with lockline nozzles and (1) 1" durso drain.  I picked up a Mag 7 from Fish-4-U and I will be using a SCWD for the returns through the bulkheads.   I may pick up another Mag 7 for a return or two over the back in order to avoid a similar experience Shane had a little while ago.  I'll post picks in a month, or so when I have water.]]> Wed, 19 Apr 2006 21:35:28 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=108882&title=drain-size#108882 <![CDATA[Drain Size? : For drains the maximum expected...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=108738&title=drain-size#108738 Author: Redrock
Subject: 10475
Posted: April 18 2006 at 11:02pm

For drains the maximum expected flow is:

1/2" = 60 GPH (Not recommended for drains as it is too easy to clog)

3/4" = 150 GPH

1" = 390 GPH

1-1/4" = 750 GPH

These ratings are based on a velocity of between 2 and 3 FPS which is really pretty high. I suspect that ratings used by the pump manufacturers are pushed a little and I am very curious if someone has done  testing on actual pump performace.

If not I would be happy to help or do some performance testing if anyone has a pump they would like to verify flow. Maybe this could be a great topic for a meeting?

Sorry, a little off subject meterman, part of my AAD or is it ADD?

 

]]> Tue, 18 Apr 2006 23:02:50 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=108738&title=drain-size#108738 <![CDATA[Drain Size? : I think that over the back on...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98063&title=drain-size#98063 Author: Gahlenfr
Subject: 10475
Posted: February 16 2006 at 10:29am

I think that over the back on the return gives you a little more flexibility as you change/move/grow the tank.  Having said that however, a drilled back should not cause problems.   I am doing a 75-90(haven't decided yet) and I will drill the overflow and put the returns over the tank.  Locline is just the coolest plumbing isn't it!]]> Thu, 16 Feb 2006 10:29:36 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98063&title=drain-size#98063 <![CDATA[Drain Size? : If you can get your return pump...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98062&title=drain-size#98062 Author: fj40fax
Subject: 10475
Posted: February 16 2006 at 10:16am

If you can get your return pump as close to 1200gph as posible after head loss (SCWD limit) it may be good to go with 3/4" lockline nozzles.  That is a lot of flow through a single 1/2" fitting.  That is my plan on the new 90g, it will also have a closed loop running 1400gph.  1200gph on your 37g should be more than enough flow.  On my 20g I run about 500gph after head loss with no additional flow in the tank, and it could use a little more.]]> Thu, 16 Feb 2006 10:16:48 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98062&title=drain-size#98062 <![CDATA[Drain Size? : &#034;Nobody is asking if that...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98058&title=drain-size#98058 Author: meterman
Subject: 10475
Posted: February 16 2006 at 9:49am

"Nobody is asking if that drawing is the back of the tank or the bottom"

The drawing is for the back because, as Mike said, the bottom is tempered.

"Oh and I would do one 1" or 1.5" drain and have a 3/4" return come up and split to two 1/2" nozzles over the back top frame of the tank. 1/2" nozzles are best because that size makes for stonger flow makes for better circulation."

Mark, why would you do the 1/2" nozzles over the frame instead of drilled with bulkheads?  Is it becasue of cost, weakening of the glass or other reasoning?  I have a SCWD to split flow into the (2) 3/4" bulhead returns.  I will use a 1/2" reducer from the 3/4" bulkeads for 1/2" Locline inside the tank to direct current.

]]> Thu, 16 Feb 2006 09:49:16 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98058&title=drain-size#98058 <![CDATA[Drain Size? : The bottom glass on Oceanic aquariums...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98028&title=drain-size#98028 Author: Mike Savage
Subject: 10475
Posted: February 15 2006 at 11:06pm

The bottom glass on Oceanic aquariums is tempered. You will have to drill the back.]]> Wed, 15 Feb 2006 23:06:37 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98028&title=drain-size#98028 <![CDATA[Drain Size? : Nobody is asking if that drawing...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98026&title=drain-size#98026 Author: Mark Peterson
Subject: 10475
Posted: February 15 2006 at 10:55pm

Nobody is asking if that drawing is the back of the tank or the bottom.

If the tank is to sit against a wall, I would drill the back of the tank and make a short, wide, covered overflow box to surround the drain on the inside of the tank, then place a gate valve at the bottom of the drain to back up the water. This makes the flow as fast as physically possible. No need for a durso.

Oh and I would do one 1" or 1.5" drain and have a 3/4" return come up and split to two 1/2" nozzles over the back top frame of the tank. 1/2" nozzles are best because that size makes for stonger flow makes for better circulation.



Edited by Mark Peterson]]> Wed, 15 Feb 2006 22:55:57 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=98026&title=drain-size#98026 <![CDATA[Drain Size? : The key is the durso, it will...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=97934&title=drain-size#97934 Author: Rocky
Subject: 10475
Posted: February 15 2006 at 12:57pm

The key is the durso, it will greatly increas flow. Just a pure gravity drain won't give you as much flow. I believe that you should always go with an extra hole which you can always cap off or put a ball valve on to slow it down. For the 37 galon I think the 1" single drain with a durso standpipe will work perfect.]]> Wed, 15 Feb 2006 12:57:47 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=97934&title=drain-size#97934 <![CDATA[Drain Size? : Thanks! They both have their...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=97933&title=drain-size#97933 Author: meterman
Subject: 10475
Posted: February 15 2006 at 12:54pm

Thanks!

They both have their advantages and disadvantages.  (1) 1" drain appears to be the better way to go - at least for this tanks size. 

]]> Wed, 15 Feb 2006 12:54:42 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=10475&PID=97933&title=drain-size#97933