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Old 12-14-2010, 04:04 PM   #1
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Please critique this sump design

Hello everyone,

A friend of mine was looking to convert their own sump and I have done quite a bit of acrylic work. I thought I'd help them with their project so I'm curious to see what you guys think. They did a lot of searching and I have done some as well and this is what we have come up with. It will be a 29g tank used for the conversion and will be used on a 72g bow front for a reef tank. The capacities I calculated are approximate.

What would you guys change and why? The sections on the left are levels of egg crate capable of holding different filtering elements.
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Old 12-14-2010, 10:05 PM   #2
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Just a question how does the water flow from the first chamber to the protein skimmer?

Besides that i feel like you should eliminated that lil gap after your refugiem and just let the water flow over the top
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Old 12-14-2010, 10:16 PM   #3
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The skimmer gets its water from the pumped that's in that second chamber. I'm not sure where the water will be returned to. (any suggestions?) It's an external skimmer.

What do you mean eliminated the little gap? I have the water level in the last chamber in its highest level where the return pump is. The baffle for the last chamber is lower than the baffle that starts the refugium so water will constantly be pulled from the refugium into the last chamber since water will be pumped out of it. The gap leaving the refugium is lower to change the current around a bit instead of it all being up top.
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Old 12-14-2010, 10:17 PM   #4
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That's a pretty standard design there. The only flaw I see is the first baffle coming out of the fuge section. It appears that you have the water passthrough mid-level. You'll want to put that up high and let the water overflow it into the bubble trap section. This will prevent any macros you might be growing in that section from proceeding into your bubble trap and clogging it up.

Lots of sump designs on melevsreef.com if you're still researching.
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Old 12-14-2010, 10:25 PM   #5
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Yeh I seen quite a few on that site. Will the fuge be ok with water entering from the top and leaving from the top? It seems like it wouldn't allow much circulation in the bottom? Maybe a small power head could be added for circulation ?
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Old 12-14-2010, 11:19 PM   #6
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Quote:
Originally Posted by neilanh View Post
It appears that you have the water passthrough mid-level. You'll want to put that up high and let the water overflow it into the bubble trap section. This will prevent any macros you might be growing in that section from proceeding into your bubble trap and clogging it up.

Lots of sump designs on melevsreef.com if you're still researching.
Thats exactly what i meant!

It just seems like the return area is sealed off
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Old 12-14-2010, 11:27 PM   #7
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Its not sealed off. It will still fill the fuge until the last baffle lets water overflow into the last chamber. Maybe it seems that since i have the water level even. It would actually be a bit lower in the last chsmber depending on evaporation.

The low exit of the fuge might let items through like stated before so that could definitely be a design flaw. Still would function exactly the same though.
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Old 12-14-2010, 11:36 PM   #8
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i dunno if u plan to put eggcrate at the middle gap between the refu and return pump....if not, some of the macros will go there....other than that, i see no problem at all....
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Old 12-19-2010, 07:47 AM   #9
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Design looks ok,But I don't think I would bother with the filters,I would use that section filled with Live rock rubble then onto the skimmer,your return from the skimmer can go straight back to the first section,I would remove the gap in the first baffle,if your worried about mixing the flow in the fuge just put a seperator in the middle of the fuge section from top down to about 2" above sand level,any macro's entering return pump will restrict the flow back,also what flow rate will be entering the sump?
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Old 12-19-2010, 08:02 AM   #10
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this inspires me to turn my wet/dry filter into a refugium
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