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Old 10-13-2008, 09:25 AM   #1
Pabs
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Sump design


Im starting a new reef in my 5ft x 2ft x 2ft tank, and using an old 4ft x 20" x 18" tank for a sump. i need to divide this up for refugium etc.. any advice or plans i can refer to for the design. It needs to have an area for the skimmer pump to be housed, the return pump to be housed and a refugium. Will it be beneficial to put live rock in here too?
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Old 10-13-2008, 10:52 AM   #2
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Well first off you need to decide how big to make the section for the skimmer, then I would divide the remainder of the tank evenly or 40/60 respectively between the refugium and return section.

I would make the return section as large as possible to minimize the changes you experience with evaporation.
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Old 10-13-2008, 12:00 PM   #3
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What purpose do you want the refugium to serve? I also have a 150 and I use a 55 tank for my sump with no fuge and don't think I would want to give up any space. The issue (n my mind) is bubbles. Having enough space between the drain, the skimmer and the return pump is important to prevent micro bubbles in the main tank. Even with baffles spaced two inches apart (provides slower velocity, allows bubbles to dissipate) I still had bubbles till I raised the level in the return section. Also a fuge is something else to clean and maintain. IMO with a tank that big you need a good sized skimmer, flow through the sump should match the processing ability of the skimmer (not more) so you'll want the pace to accommodate the flow without having a roaring rapids ride through the sump. JMO
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Old 10-13-2008, 02:08 PM   #4
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Originally Posted by Pabs View Post
Im starting a new reef in my 5ft x 2ft x 2ft tank, and using an old 4ft x 20" x 18" tank for a sump. i need to divide this up for refugium etc.. any advice or plans i can refer to for the design. It needs to have an area for the skimmer pump to be housed, the return pump to be housed and a refugium. Will it be beneficial to put live rock in here too?
I have a tank and sump that are almost identical in dimensions. If you click the link in my signature, you can see a number of images and the sump design I used, which has worked well for the last couple years.
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Old 10-13-2008, 02:15 PM   #5
Pabs
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Thanks for your input guys. I've been doing a bit more research and this is how i am considering setting it out:

1st 1/4 for the overflows to drain into and the pump for the skimmer to be housed. Giving me an area of 12" x 18" x 20" LxWxH.

4th 1/4 at the other end of the sump will be the return area housing the return pump and 2no 300w heaters. This area will be the same size as the 1st 1/4.

The area between will be split length ways to give me 2no. 24" x 9" x 20" spaces. The front will be the refugium to house the likes of beneficial bacteria and possibly a DSB. The back will be the area that the skimmer returns into. Could i put live rock in this section as there will be a good flow of water running through here?

This is how i see it working:

water in to 1st 1/4 skimmer section from overflows, teeth cut into the back side of the divider to overflow any excess water to the back middle section, skimmer returns into back middle section, 1no. of the overflows from the tank will partially drain into the refugium while the rest carries on and drains into the skimmer section. Refugium overflows into back section through teeth cut into the divider at the opposite end to where the water enters the refugium, the back section flows through bubble stop dividers at 2" apart and into the return area, water heated and pumped back to tank.

Hope this makes sense. Let me know what you think.

Motorslave, skimmer pump runs at 2800lph and return pump at 3000lph would this be ok?
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Old 10-13-2008, 04:17 PM   #6
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Originally Posted by Pabs View Post
Thanks for your input guys. I've been doing a bit more research and this is how i am considering setting it out:

1st 1/4 for the overflows to drain into and the pump for the skimmer to be housed. Giving me an area of 12" x 18" x 20" LxWxH.

4th 1/4 at the other end of the sump will be the return area housing the return pump and 2no 300w heaters. This area will be the same size as the 1st 1/4.

The area between will be split length ways to give me 2no. 24" x 9" x 20" spaces. The front will be the refugium to house the likes of beneficial bacteria and possibly a DSB. The back will be the area that the skimmer returns into. Could i put live rock in this section as there will be a good flow of water running through here?

This is how i see it working:

water in to 1st 1/4 skimmer section from overflows, teeth cut into the back side of the divider to overflow any excess water to the back middle section, skimmer returns into back middle section, 1no. of the overflows from the tank will partially drain into the refugium while the rest carries on and drains into the skimmer section. Refugium overflows into back section through teeth cut into the divider at the opposite end to where the water enters the refugium, the back section flows through bubble stop dividers at 2" apart and into the return area, water heated and pumped back to tank.

Hope this makes sense. Let me know what you think.

Motorslave, skimmer pump runs at 2800lph and return pump at 3000lph would this be ok?
I think you are over engineering the sump, esp with the lengthwise divide in the center section,
as far as the skimmer pump versus return pump, I take it thos flow rates are the mfgr stated performance? Keep in mind that you will have reduced flow thru the skimmer from resitance, and the return will flow less than rated depending on high it has to pump and how many bends to restrict flow.
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Old 10-13-2008, 04:37 PM   #7
Pabs
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Doug1

What do you sugest to simplify things?
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Old 10-13-2008, 04:41 PM   #8
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Motorslave, skimmer pump runs at 2800lph and return pump at 3000lph would this be ok?
Should be fine, and a good value for a ~600l tank.
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Old 10-13-2008, 04:47 PM   #9
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Thanks crvz.
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Old 10-13-2008, 05:10 PM   #10
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Doug1

What do you suggest to simplify things?

Forget dividing the center chamber lengthwise, depending on how you direct water thru it, you may have one section a lot slower than the other, then again I am not a fan of refugiums, so I am not impartial.
I had a 48x16x16 or so sump under my 75g tank 1/3 was the skimmer section, and 1/4 on other end for submerged return pump, with baffles in the center section. I believe it's still fairly the same and is the sump om Motorslaves 150
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Old 10-13-2008, 10:39 PM   #11
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I think incorperating a fuge into the sump can be a bit hard to clean. I use a sperate 10gallon tank placed in the sump as a fuge. I have a pump pushing water into the tank and then it overflows into the sump. This way when I need to clean it I simply lift it out of the sump. I have also found this method prevents any of my macro algae from getting in an unwater part of the sump, however this design does not allow pods to flow into my display, but neither does any design with a return pump as you typically chop most of them up with the return pump. good luck
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Old 10-14-2008, 06:17 AM   #12
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I think incorperating a fuge into the sump can be a bit hard to clean. I use a sperate 10gallon tank placed in the sump as a fuge. I have a pump pushing water into the tank and then it overflows into the sump. This way when I need to clean it I simply lift it out of the sump. I have also found this method prevents any of my macro algae from getting in an unwater part of the sump, however this design does not allow pods to flow into my display, but neither does any design with a return pump as you typically chop most of them up with the return pump. good luck
I agree on harder to keep clean.
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