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  #1  
Old 01/02/2008, 01:26 PM
TheCureForSin TheCureForSin is offline
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Which sump return pump?

Went on a little spending spree on setting up a sump. Trying to figure out which pump I'm going to need to use as a return.

I'm going to lay my sump out similar to this: (bought that)
http://cgi.ebay.com/ws/eBayISAPI.dll...TODAY.m238.lVI

So it'll be Lifereef overflow box down to that ^, then up from that (about 4' from bottom of sump to top of tank), into a SCWD, then to 2 U Tube returns.

One thing I'm wondering, is it ok if I have 1" tubing coming into the sump then 3/4" back to the tank? The SCWD uses 3/4" so one of my questions.

Any other tips? how much room to leave in the skimmer area or anything else?

The Sump is a 20L also

Last edited by TheCureForSin; 01/02/2008 at 01:42 PM.
  #2  
Old 01/02/2008, 02:54 PM
Fish_wiz2 Fish_wiz2 is offline
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Well depends on what GPH the overflow box kicks but for that sump a Mag Drive 5 (pumps 500 GPH) is enough.
  #3  
Old 01/02/2008, 04:37 PM
warrenm107 warrenm107 is offline
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I would use a Mag 5, and I have 1" pvc running into the sump and 5/8" for my return line.
  #4  
Old 01/02/2008, 09:07 PM
TheCureForSin TheCureForSin is offline
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anyone else have opinions?
  #5  
Old 01/02/2008, 09:35 PM
joesfiddy joesfiddy is offline
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mag 7
  #6  
Old 01/02/2008, 10:07 PM
drillsar drillsar is offline
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They recommend to double the output size, What size tank? you also have to figure out head loss, theres a good calculator for this somewhere. The Mag 5 and Mag 7 both have 1/2" so I would use at least 1" pipe, People dont understand that you will have more loss with smaller pipe.

Im going to perhaps change to a Mag 9.5, so I might be selling my Mag 7, I figured out that I will have much beneficial benefit for my tank perhaps going with the 9.5 and use a ball valve to release some pressure. It depends on the size of your main tank you should have 10 times the size of your tank for flow, so with a 55GAL you should have at least 550gph but remember most Overflows will only take 600GPH unless you get a double
  #7  
Old 01/03/2008, 12:12 PM
TheCureForSin TheCureForSin is offline
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My main tank is a 75, going to be using a Lifereef overflow, so that's gonna give me 600 gph to a 20L sump. Now the reason why I was considering using 3/4" on my return was for the SCWD, trying to maximize flow in the tank. I have 2 Koralia 2's in there right now just keeping it moving while I wait on the rest of my supplies (poor live rock is sitting in a rubbermaid for another day or 2). Figure can get 2 return pipes alternating so I can get some corals going one of these days.
  #8  
Old 01/03/2008, 12:35 PM
sjm817 sjm817 is offline
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The Lifereef overflow (good choice BTW) can handle 600 GPH or so. The SCWD IME, cuts flow back a lot. Way more than they state. If you are using a SCWD, I would use an Eheim 1262. If you want to use a Mag, use a 9.5 with the SCWD. I would use a larger sump than a 20L. A 30L will normally fit under a 90G.
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  #9  
Old 01/03/2008, 01:05 PM
drillsar drillsar is offline
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If you want SCWD then go with a Mag 9.5, Use 3/4" pipe to SCWD then Extend pipe to 1 1/4 or 1"

You should calculate head loss so thats why you should go with a mag 9.5
  #10  
Old 01/03/2008, 01:09 PM
an411 an411 is offline
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go with ehiem or ocean runner very efficient quiet and does not produce much heat into the water
  #11  
Old 01/03/2008, 01:29 PM
sjm817 sjm817 is offline
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The Eheim 1262 will do better than a Mag9.5 against the high head of a SCWD
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  #12  
Old 01/03/2008, 03:33 PM
drillsar drillsar is offline
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Yeah but look at the price difference, Eheim is overpriced
  #13  
Old 01/03/2008, 04:56 PM
sjm817 sjm817 is offline
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That is a matter of opinion. The Eheim will probably last 3 - 4x as long, will have more flow especially with a SCWD, and will be much quieter. It is also easier to service and can be run reliably external without leaking. Its a different class of pump. I think it is well worth the extra $40 or so. That is a drop in the bucket in this hobby.
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  #14  
Old 01/03/2008, 05:15 PM
mg426 mg426 is offline
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If you are running a SCWD I would suggest doubling the size of your return pump. I have used SCWDS and they are Flow Killers!
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  #15  
Old 01/03/2008, 05:21 PM
S_Stoney_S S_Stoney_S is offline
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Eheim = German engineering even comming from the UK I can appreciate the increadably high standards they have. Top quality pumps IMO

Im getting one as soon as I move house and re set the tank. As the maxi jet pump I use is terrible.
  #16  
Old 01/03/2008, 05:28 PM
petes97 petes97 is offline
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Regardless of "perceived" value and engineering, from an owner of a number of mags and an eheim 1262, the plastic housing around the impeller on an mag is terrible and subject to easy stress fractures if you over tighten the screws and tends to run hotter than a comparable eheim. In this case I firmly believe that you get what you pay for.

Buy a pump that is a little bigger than you need and turn it down with a ball valve inline.
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  #17  
Old 01/03/2008, 07:37 PM
TheCureForSin TheCureForSin is offline
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alright, definitely gonna keep this stuff in mind! thanks for all the info!
  #18  
Old 01/03/2008, 08:12 PM
mg426 mg426 is offline
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I have a couple cracked mag covers too. Although They are fairly cheap to replace, I would get the Ehiem if you got the $$$$
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  #19  
Old 01/03/2008, 08:18 PM
Steve 926 Steve 926 is offline
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I am using a Quiet One 400, (1" in/out) on a manifold that services other items via ball valves with a SCWD that I drilled out & enlarged the intake & output's of the SCWD. The QO is submerged in the sump & has no problems, I also use a 1" union on the pump for maintainence. The SCWD has better flow now & continues to work well.
I have considered upgrading to a 600 pump & keep the 400 as a spare (Murphys Law)

I also use a QO 400 ona closed loop with another drilled SCWD

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Since this picture I have added a 1" flap check valve below the SCWD on the main return from the sump ( top SCWD in pic)
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  #20  
Old 01/03/2008, 08:39 PM
warrenm107 warrenm107 is offline
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Thumbs up

Wow!!!!!!! Love your plumbing. I think I'll copy it before you patent it. More pictures please.
  #21  
Old 01/03/2008, 09:01 PM
Steve 926 Steve 926 is offline
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Thank You, But I must share credit with all the members of RC throughout the year of research I did. A lot of late night reading & contemplating, not to mention a few beer's & Tequila along the way.

Here is a few from about 6 months ago, I did make a few small changes, but everything is working really well & my livestock is thriving & outgrowing the display quickly


Photobucket

Photobucket

Photobucket

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Photobucket

Photobucket
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  #22  
Old 01/03/2008, 09:09 PM
sjm817 sjm817 is offline
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Can you get to the back if you have to service something?
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  #23  
Old 01/03/2008, 09:13 PM
Steve 926 Steve 926 is offline
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Yes, I have it about 10~12" from the wall, & the stand is braced to the wall for stability.
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  #24  
Old 01/03/2008, 09:18 PM
TheCureForSin TheCureForSin is offline
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Wow, wish I had someone around this area to plumb up something like that for me! Impressive for sure.
  #25  
Old 01/03/2008, 09:33 PM
Steve 926 Steve 926 is offline
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Trust Me if I can do it so can you!!!

PVC & glue are cheap. Take your time, think it out, think it out again!, & start gluing !!
You will be surprised how good you can get at it !
Read the forums there is a wealth of information in them, & advice
on how to do things.

you can PM me if you have any questions, but the forums are the best for different advice & opinions.

Steve 926

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