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Old 08-12-2014, 09:29 PM   #1
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Question on an internal overflow

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ID:	246552 just wondering if anyone has seen or used an internal overflow like this. I am new to the hobby and it looked like an easy diy overflow to do


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Old 08-12-2014, 09:44 PM   #2
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Looks like about a 1" to 1 1/4 inch pipe with a 1/4" to 3/8" cut down the middle Attached to a bulkhead on both ends.


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Old 08-13-2014, 01:36 PM   #3
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Can you zoom out?
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Old 08-13-2014, 02:02 PM   #4
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No it's just a pic I got off a old forum on another site. This is all the info I could really get off the forum. Quote from forum

"The overflow is made from 1" pipe so I would say it can handle about 400 gph safely. I am using and eheim 1250 and after headloss I'm guessing I flow about 200 gph through there and can see that it could definitely handle twice as much. You can use 1.5" pipe or even 2" pipe if you want and reduce it down to 1" at the elbows because each drain only needs to handle 1/2 of that flow.

I cut the slit using a dremel it's about 3/16" wide. If you look at the picture you can see that it has plenty of room for water to flow into. I could not be happier with the functionality of this easy DIY job. Once you see yours in action you'll see what I mean."

He also said it was really quiet. The only thing I would do different is cut 1/4" cuts every 1/4" about 3/4" deep to skim a lil more surface area. I'm new to the hobby so I didn't know if this was a good idea.


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Old 08-13-2014, 02:08 PM   #5
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I was wondering because I was just getting ready to do a diy overflow for my tank 46 gal fowlr with 2 -3/4" bulkhead overflows into a 20 gal long sump. It looks like you would eliminate any chance for fish getting into your overflow. Don't know about snails tho, I'm not an expert


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Old 08-13-2014, 02:21 PM   #6
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My main like for this kind of overflow is I don't really care for the ugly boxes that are mounted to the side of the tank and my tank will also be viewable from the front and back( I'm putting it in a wall) so I just wast it as clean looking as possible


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Old 08-16-2014, 04:10 PM   #7
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I would do slits in the pipe instead of one long open cut. That would be safer for small critters so they don't get sucked in. Other than that, it looks like a good idea


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Old 08-16-2014, 04:21 PM   #8
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So airgoose, do you think 1/4" is too big, and I should go 1/8" every 1/8", 3/4" deep? I've been thinking about that.


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Old 08-17-2014, 03:33 PM   #9
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Here is my prototypeClick image for larger version

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Name:	ImageUploadedByAquarium Advice1408299602.986650.jpg
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ID:	247081 I ended up going 1/8" every 1/8" by 1/2" deep


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Old 08-17-2014, 11:01 PM   #10
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Looks good. Just be sure to keep it clean so algae doesn't clog it up. That's a pretty good idea and might try it with a tank that I got.


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