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Overflow help!


Vance164
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So I'm trying to decide how to do my overflow on my tank I can't decide between internal or external. I like the idea of a coast to coast but not sure if I like the space it takes. I was pondering the idea of maybe making a slim coast to coast with just bulk heads feeding an external box with all the bean animal plumbing. Please share photos and ideas! I'm getting bored since I just finished my term of school and need to get my project rolling!

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For me, I prefer internal overflows. I would rather sacrifice the space inside, and be able to put the tank tight against the wall. Then I don't ever have to deal with a problem back there. Just my preference,

Regardless there will be plumbing so I don't think it will be tight to the wall. Drilling the bottom is not a possibility due to tempered bottom panel.

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There are lots of this style of low internal tank profile with external boxes. That's the route I'd go if I redid mine:

 

https://www.ebay.com/itm/201291912999

 

Its a Synergy Copy and to be honest I would rather do the Synergy. Yes it cost more but having teeth that come off to clean it is worth it to me.

 

I say ghost overflow as they blend right in.

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I think the ghost look good but are kind of pricey and a long lead time. And the problem with all of these are none of them are 6ft long to be a coast to coast. If I were just to get black acrylic and make one myself. How far off of the back of glass do you think would be a minimum needed?

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I think the ghost look good but are kind of pricey and a long lead time. And the problem with all of these are none of them are 6ft long to be a coast to coast. If I were just to get black acrylic and make one myself. How far off of the back of glass do you think would be a minimum needed?

 

I think the biggest Synergy Ghost is 24" long. I did see a NIB one for sale on R2R for 200 and that was a good deal.

 

I think my overflow is 4 inches wide in the back of the tank. Might be a little smaller but not sure. I am sure if you go on BRS they will give dimensions.

 

What size tank are you doing?

Edited by spectra
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Answered your PM

 

Depending on your bracing you might not be able to get  72" of overflow into the tank (probably more like 70"-71" with inside measurement) and it'll be 60" or even 48" that you can snake in past the bracing.  

 

You would be better to install an internal overflow for surface skimming rather than an external one, or add something  like the "ghost" type overflow, diy 2 boxes but all your really need is one.  

Edited by wanareef
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So what spectra is saying is correct. If you have enough turnover in your tank, (return pump) the the top of your water will skim on its own very well. The benefit to a C2C is that if you have any dead spots in the top surface of your tank, it will get turnover by the C2C overflow because of gravity. I personally would not put a ton of emphasis on getting it unless you just want the cool piece of equipment. It does have a nice look and fit n finish but not absolutely necessary. If your pump is not overly strong and not turning the tank several times an hour then it may be worth it. Hope this helps!

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Thank you guys I will be running with 2 mp40s so I feel I should have enough flow. I guess I'm not set on the C2c just had read somewhere it did the best job of surface skimming. But after reading that high turnover from flow fixes the issue I guess I'm not set on it now. That was pretty much the awnser I was looking for I would prefer the least intrusive setup possible so not going C2C would be better.

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The thing with surface skimming/surface renewal is the longer the overflow box is determines just how effective it can be from how it was explained to me.

 

Bean made me read the section on surface renewal 2-3 times before he realized i was just trying to get my system stable.

He saw how long my tank was relative to the overflow box and focused on it a lot.

 

The analogy he uses here makes a lot of sense.

I wish my box was much longer.

 

http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx

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I also totally agree with Spectra and Brian when it comes to the amount of turnover we have in our tanks, it's pretty easy in most cases to eliminate that little dead spot that can form at the surface with a little powerhead adjustment or adjusting your returns. It's just a bit easier with a long overflow box because of what Brian said, gravity takes over. 

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I would second (or is it third or fourth now) that synergy ghost option - very slick looking and seemingly quite practical. Combined with sufficient turns, as Brian indicated, I would think it would be plenty efficient and the larger one would likely have around the same total skim area (in linear inches) as one of the more standard internal dual overflow setups while being a whole lot easier to clean and maintain. If I didn't already have a tank setup with the dual internals I would definitely be looking at these myself. Nice option.

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The thing with surface skimming/surface renewal is the longer the overflow box is determines just how effective it can be from how it was explained to me.

 

Bean made me read the section on surface renewal 2-3 times before he realized i was just trying to get my system stable.

He saw how long my tank was relative to the overflow box and focused on it a lot.

 

The analogy he uses here makes a lot of sense.

I wish my box was much longer.

 

http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx

this is the exact article that made me want to go coast to coast hahaha! That is why I was so tied up on a longer over flow then 1/4 of my tank that the brand name overflows would have. while they look sleek if the performance was substantially better I could sacrifice some aesthetics for such.

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That synergy shadow Spectra posted a link to is slick I think it would be an awesome choice

It is very slick!

 

I would second (or is it third or fourth now) that synergy ghost option - very slick looking and seemingly quite practical. Combined with sufficient turns, as Brian indicated, I would think it would be plenty efficient and the larger one would likely have around the same total skim area (in linear inches) as one of the more standard internal dual overflow setups while being a whole lot easier to clean and maintain. If I didn't already have a tank setup with the dual internals I would definitely be looking at these myself. Nice option.

good point.

 

Your going to need a good return pump either way.

Yes I will. I'm going to be looking into those soon. im shooting for a 1200gph turn over rate which will be close to 10x hope that should be sufficient.

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