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Old 10-08-2006, 12:00 PM   #11
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If you returns are not plumbed too low, a five gallon resivoir may be enough.
What do you mean by "your returns are not plumbed too low"?

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Are you running the mag submerged or external? If submerged, look into replacing the external screws with teflon. Stainless or no, they will rust. If you run the pump external, you will not have to deal with the excess heat mag drives are infamous for.
I'm running it externally. Going to have to drill the tank XD



Quote:
You can mount the skimmer outside of the sump if you have room, just lay some pipe for it. That would save you some space and give you more water.
Good point on the more water volume part by HOT the skimmer. I'm just afraid that I won't have anymore space to hang the skimmer in the stand. Plus, I've heard that skimmers are best used in-sump. Anyways, that part is easy to switch around. About the pipe being excessive...I don't think they take that much space where water could be


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It's a really cool design if but I'm worried about not having enough room for overflow from the main tank when you shut the power off.
Hmm, that's easy to compensate. I'll lower the baffles a little to increase more free space if needed.

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One thing I just noticed though is that most of the water is going to be returned to the tank without any type of filtration.
Mmm..., What do you mean? At the intake section, there are the skimmer, UV and phosban reactor, so most of the water that overflows into the sump will get filtered first before entering the return and fuge sections.

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Here is one I just drew up for you that in my eyes seems a bit more practicle with the exception of the blow off from the mag 9 to the skimmer return. I'd either do larger pipe on the overflow side, rig the overflow to handle more water, restricting the flow of the return pump, or try going for a smaller pump.
Yeah, I wanted to go with a simpler design but after reading from this site, I decided to go with this complex design for more stabiity.
http://www.melevsreef.com/allmysumps.html

I'll give you some insights about your design. It looks good but there are some flaws which I was considering when I was making mine.

Intake >>> Fuge >>> Return w/ Skimmer

The cons of this are:
1. The flow through the fuge is too much. I wanted to have control over it that's why I teed the return off to the fuge with a gate valve.
2. With the skimmer skimming after the fuge, you're skimming out most of the pods and liveplanktons that got out of the fuge.
3. The tee off of the return line to the return line of the skimmer will pressure back the skimmer's outake - overflows the skimmer.
HTH

And Thanks for opinions!
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Old 10-08-2006, 06:31 PM   #12
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If your returns are placed low in the tank, when the power shuts off, the returns will turn into a syphon and water will flow out of the tank all the way down to the bottom of the return, that is if the return is lower in the tank than the lowest point of the overflow box.

I was wrong in saying that the water would return to the main tank without ANY type of filtration. What I meant was that it will get skimmed, and sterilized, however you don't have much over the water flowing through any live rock. You have the fuge, but it's fairly small, maybe 2 cf at the most, from what the pic shows, and only a small fraction of water is flowing through it. I see your purpose for setting it up this way, and it makes sense. I'm just one of those people who likes to have a very large refugium.

As for the cons.
1. understandable, I'm just used to having huge refugiums.
2. This is minimal, you skim out the crud, then all the other stuff flows back into the input side of the sump. But you have a point.
3. I didn't like that part either. lol. I just stuck it there without much thought. I think it was 3 AM when I drew that plan up. If I had been more awake, I would have just put the blow off back in the return side of the sump.

Anywho, looks like it will work. You just might have to mess with it a bit. Good luck bro, and remember k.i.s.s.
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Old 10-09-2006, 12:17 AM   #13
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I still don't get what you're saying, sorry XD I'm just too slow I guess.

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If your returns are placed low in the tank
By "tank", you meant sump? What "returns" are you refering to?

Quote:
the returns will turn into a syphon and water will flow out of the tank all the way down to the bottom of the return
Again, what "returns"? "Tank" meant the display tank in this sentence? "return" meant the return section in the sump?

Quote:
that is if the return is lower in the tank than the lowest point of the overflow box.
I'm completely lost XD

Can you put it in a different way so I can understand it? I feel like I'm taking the SAT Critical Reading test lol

About not having much water moving around the LR, I've got it covered in the main tank. 160lbs+ LR w/ 1600+GPH hehe. The main reason I'm having a fuge is to export PO4 and NO3 through macros and DSB; and pods for mandarin.

Oh yeah, do you happen to know how to setup a float valve auto top off? TIA!
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Old 10-09-2006, 02:01 AM   #14
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i think its basically, if your return is too low, if the power goes out, water will start going through your return pipe and start a siphon, overflowing your sump
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Old 10-09-2006, 03:09 AM   #15
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Water flows out of your tank through the overflow box. The water will never go below the lowest point of your overflow box. Unless the place where your water comes back into the main tank from the sump is far under water. As in the overflow box is an inch under the water, if your return heads are 2 inches under water, then all of that water will be syphoned down to the sump from your return head, not your overflow.

What we are saying is, put the return heads higher than the overflow box, that way you don't end up with a lot of water unside your stand. heh ...

I'll draw you a pic if you need further understanding.
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Old 10-09-2006, 08:54 PM   #16
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Originally Posted by speakerman
What we are saying is, put the return heads higher than the overflow box, that way you don't end up with a lot of water unside your stand
Or just drill two 1/8" holes in the returns, one in front and one in back, 1/4" below the water surface when everything is up and running. That will prevent the return lines from siphoning water from the tank and overflowing the sump should there be a problem w/ the return pump.
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Old 10-10-2006, 12:52 AM   #17
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Ah... I get what you're saying now... That part is covered by...All-Glass LOL The plumbing kit's return pipe came with 1 or 2 holes drilled on it to prevent syphoning.

Thanks for the concern though!
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Old 10-11-2006, 11:45 AM   #18
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It is still a valid concern. Very few people remember to clean the boogers out of those "pee holes". They can and will clog. This is why we are suggesting not having the returns to low in the tank. The Loc-line can drop nearly six inches in the tank. If it back-siphons from that point, you will be watering your carpet!
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