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Old 08/22/2018, 05:54 PM   #9801
Zalick
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Join Date: Dec 2011
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I've been running a 1.5" bean animal setup on my 300 w/ 100g sump for about 4 years. I run about 700gph through my sump and have no plans to ever increase that amount. I overbuilt the bean animal after reading through both of these threads and tons of others.

The drop from tank to sump is about 4'.

I'm building a new 300 tank and setting up a new bean animal. James, with Envision, suggested 1" siphon and open channel with a 1.5" emergency would be plenty.

The flow charts I saw show that 1" at full siphon will give me 960gph min up to 2200gph at average pressure.

Does anyone see any issues with going with 1"?

Thanks!


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300g deep dimension, 6 Kessil a360, 2 Stream 3s, C2C beananimal overflow. 100g sump, Vectra M1 -> 114w aquauv -> SRO 5000ext w/ VarioS-6S. -> Vectra L1 return. SpectraPure MaxCap 180 2:1

Current Tank Info: 300g deep dimension mixed reef

Last edited by Zalick; 08/22/2018 at 06:00 PM.
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Old 08/22/2018, 06:03 PM   #9802
DougSupreme
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I ran 1.5" for all 3 pipes when I built mine. Granted, I'm running about 3k GPS thru the sump on a 225g tank

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Current Tank Info: 75g mixed reef
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Old 08/22/2018, 09:11 PM   #9803
Sisterlimonpot
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Quote:
Originally Posted by Zalick View Post
I've been running a 1.5" bean animal setup on my 300 w/ 100g sump for about 4 years. I run about 700gph through my sump and have no plans to ever increase that amount. I overbuilt the bean animal after reading through both of these threads and tons of others.

The drop from tank to sump is about 4'.

I'm building a new 300 tank and setting up a new bean animal. James, with Envision, suggested 1" siphon and open channel with a 1.5" emergency would be plenty.

The flow charts I saw show that 1" at full siphon will give me 960gph min up to 2200gph at average pressure.

Does anyone see any issues with going with 1"?

Thanks!
I was always under the impressing that the whole purpose for the 1.5" pipe wasn't so much for flow rate as it is for larger area inside the pipe to allow the water cascade down the open channel without it gurgling and flushing. If you're adamant about using smaller diameter piping, I would suggest that at the very least you have the emergency and the open channel at 1.5" and make the full siphon 1". Honestly though, if you're going to do that, you might as well keep all three of them 1.5".


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Current Tank Info: 300 in progress
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Old 08/23/2018, 08:19 PM   #9804
Lsufan
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I would go with 1.5” for the reasons sisterlimonpot mentioned. Yes a 1” syphon can handle your flow, but a 1” open channel can’t handle anywhere close to what a 1.5” can a remain quiet. With 1” on a system that large it won’t be able to take much fluctuation at all & remain quiet. U may find u have to mess with the valve on the syphon more often to keep it quiet. 1” will work with the flow u will have but u may have to tune on the valve every so often to where 1.5” u probably won’t ever have to touch the valve once it’s setup. So if u do decide to use 1” it isn’t something u will have to redo because it doesn’t work, just be prepared to adjust it every once in a while. How often would depend on the system. Personally, 150 gallon tank & up I would go with 1.5”.

I have a manifold off my return pump & with the 1.5” drains I can shut down a reactor or my fuge & not have to touch the valve. If I had to estimate I would say 1.5” can handle between 250 to 350 gph flunctuation in the system & 1” will get loud at about 50 to 100gph. It’s a pretty big difference.



Last edited by Lsufan; 08/23/2018 at 08:25 PM.
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Old 08/24/2018, 09:43 AM   #9805
FoothillCorals
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I also have a tank made by James. I had the tank built with 3 x 1.5" I reduced the siphon channel to 1" just after exiting the overflow and kept the plumbing inside the overflow box at 1.5" and it works great. Having both the open / emergency channels at 1.5" just allows more flow and quieter operation. So I suggest 3 x 1.5

You should be happy with your tank he does great work.


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Old 09/09/2018, 08:15 PM   #9806
Xenaph
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Hello,

I need some advice on which size pipe, where to put the overflow, how many i need on my new project tank.

It is a bowfront 86x29x29 (24 at end). It will be a freshwater tank.

Thanks




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