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Old 07/11/2012, 09:03 AM   #26
sammy77
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Wouldn't a screen work better than the egg crate to keep the lil critters out in the overflow area?


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Old 07/11/2012, 11:18 AM   #27
super_steve85
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Weir flow

Quote:
Originally Posted by kcress View Post
But to me the biggest advantage is that it's easier to modify and to hit your target first time with a smooth weir. I've often been tortured by toothed weirs causing so much restriction that the tank level was shockingly higher than expected.
I've got a civil engineering reference manual that I used when studying for the PE exam. It's got some helpful formulas for figuring flow through a weir. I used it when building my tank and the formulas worked out to be pretty close to real world. I love it when that happens.

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Old 07/11/2012, 11:22 AM   #28
shovelrider
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If you run no teeth you just need to use gutter guard to keep the animals out.


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Old 07/11/2012, 09:17 PM   #29
robertifly
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Toothless and love it. Toothless will skim more surface than other, toothless tends to be quieter. I made a simple creature guard of black nylon gutter guard by bowing it up long ways and inserting it down into my black acrylic weir, it disappears and stop migration into drains of any but the smallest animals which teeth couldn't keep out either.


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Old 07/11/2012, 09:48 PM   #30
kcress
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Quote:
Originally Posted by super_steve85 View Post
I've got a civil engineering reference manual that I used when studying for the PE exam. It's got some helpful formulas for figuring flow through a weir. I used it when building my tank and the formulas worked out to be pretty close to real world. I love it when that happens.

If you ever need them just holler at me.
Hi SSteve!

Those weir numbers were for smooth weirs though, weren't they?

You a CE or a ME?

Thanks much for the reference offer.


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Old 07/11/2012, 09:57 PM   #31
super_steve85
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Quote:
Originally Posted by kcress View Post
Hi SSteve!

Those weir numbers were for smooth weirs though, weren't they?

You a CE or a ME?

Thanks much for the reference offer.

I'll have to double check.

I'm a CE but practice structural. All the weir/pipe flow stuff I had to learn was by force.


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Old 07/11/2012, 11:13 PM   #32
reefermad619
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I like em like I like my women... Toothless.


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Old 07/12/2012, 07:15 AM   #33
BeanAnimal
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I posted a formula a few times here in a few threads... never added it my site and not at the office to look it up.. happy searching


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Old 07/12/2012, 08:41 AM   #34
super_steve85
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I believe the toothed overflow falls into the contracted weir type and the toothless is suppressed.


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Old 07/16/2012, 11:00 AM   #35
keihi20
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robertifly:

Can you explain a bit more about the gutter guard?


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Old 10/24/2015, 07:07 AM   #36
greaps
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Anyone else, yeah this was dug up. Strongly considering going toothless after reading this thread.


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Old 03/05/2018, 07:22 PM   #37
johnfallon135
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i'm digging this up again too lol! why is everything in stores done with tooth then?


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Old 03/06/2018, 07:00 PM   #38
krazyk148
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I did drill holes. Had to find a way to keep an octopus from getting into the overflow!


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Old 03/06/2018, 07:50 PM   #39
IdahoCindy
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Toothless. One of the best decisions I made in my build.


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Old 03/07/2018, 06:35 PM   #40
03LightningSVT
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http://reefcentral.com/forums/showthread.php?t=2478221


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Old 03/07/2018, 06:53 PM   #41
lapin
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My experiences; I have no teeth on my overflow. I got about 50% left in my mouth. I'm over 50. I feel ahead of the game if I live to 100....... Some fish love the overflow box. Once they know its there you can't keep them out. Water slide for fish. Good fun. When adding a new fish, I found that screening it off for a few days can be a good thing. If they cant get in after a few tries they give up. When sleeping some clowns float around and can get swept in. They usually only do this once. They are no dumb bunny.


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Old 03/08/2018, 08:08 AM   #42
AquaManvsSkimme
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Quote:
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Exactly


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Old 03/09/2018, 02:29 PM   #43
drtrash
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I have coast to coast and use a small strip of eggcrate to stop being g stuff. Had someone describe the new ghost overflow design and weir is removable for cleaning so he describ d when you remove a rush of water will flow better into overflow so it holds back more water than we think


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Old 03/10/2018, 08:51 AM   #44
gabe145
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I would definitely make sure you have teeth on it if you have any kind of fish.


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Old 03/10/2018, 09:34 AM   #45
ca1ore
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Thread was started almost a decade ago ..... surely there's a definitive answer by now


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