Need some help on dimensions. I am going to the glass shop tomorrow to have the pieces for my external overflow and weir cut. I have a 24" wide section of glass to work with since it is going on one end of the tank. I was thinking about 18" wide x 6" deep x 6" tall? Will this be sufficient for the bean? I am gonna be using 3x 1.5" bulkheads as well. The Weir I was just going to do 22"x2"x6".
Silent and Failsafe Overflow System
- Thread starter JohnL
- Start date
A 1-1/2" full siphon will flow like 2K gph. Hella big pump, must be a huge tank.
That size BH has a 3-1/2" flange, so if you're putting them in an overflow box at one end and it's 6" wide then they'll fit. My external box is 3-1/2" wide and the 1" BH's fit perfectly and you can still get your hand in there if you need to clean or pull something out of it.
I didn't get what you mean by weir - another box on the inside or? Weir is the drain? How are you going to drain to your external overflow?
Is the tank 24" deep?
What kind of pump and sump are you installing?
Total gallons for tank and sump?
Right. im drilling 3 holes on one end of the tank. The holes will lead to the external box. The inside will have a narrow box for surface skimming feeding the external. Its a 265 gallon. Gonna use a dart for return. Sump size not sure yet, somewhere in the neighborhood of 100 gallons
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Sounds like you've got it sorted.
I had to look up DART pump to see that it puts out 3600gph. I'm all pretty new at this but that seems like a lot through a 100 gallon sump. The flow sounds like a good amount for that size tank, I'm just not sure about putting it all through the sump.
According to the drain flow calculator on the home page:
Using the following input parameters
Gallons per Hour = 3600
Drain and Overflow sizes are calculated as
Recommended minimum drain pipe diameter = 2.48 inches
Recommended minimum linear overflow size = 54 inches
If it were me I would use the Dart as a closed loop pump with a 4-way valve (ocean thingy) and use something in the neighborhood of 1200-1500gph through the overflow/sump:
Gallons per Hour = 1200
Drain and Overflow sizes are calculated as
Recommended minimum drain pipe diameter = 1.43 inches
Recommended minimum linear overflow size = 18 inches
Also note that some fittings constrict more than the inch and a half, like ball valves for example. I went with thin wall pvc, and a 1-1/4 ball valve with shims to get a full inch throughout. I have 22" of linear out-flow for about 600gph. At a tested 450gph the spill was about a quarter inch high over the length of the weir. If you ran 6 times that volume through 24" of spillway you would have an inch of water flowing over your weir.
Maybe I'm just not getting it. :spin3:
Good idea on the bigger ball valves. Im not gonna run a closed loop. Too much extra power and noise. Im getting 2 MP40s for flow. As for the dart, after head loss and running other stuff off it it should be less than 2000 going through the sump.
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O3reefer
New member
I fixed my drain problem and it is working perfect now. I chopped the last third of the end of the siphon pipe and adapted it down to 1" pipe with a 1" union ball valve. It let me adjust it a lot better and it doesn't trap anymore air. Thanks bean for the great setup and thanks for all the help from everyone. here is a link to my tank http://www.reefcentral.com/forums/showthread.php?t=2001594 And here is some pictures of what I did to the drain.
pelochas
Member
i have one inch plumbing for everything except a few pieces where the reeflo dart pump i have installed. i guess i have too much flow. lots of noise of gurgling and suction of air. when i partially close the output of the pump, i still have lots of gurgling and suction of air.
can someone list a few items and places to check for about what causing the issues. or do i need to small on the pump.
sump is pictured below. i still need to extend the emergency overflow down to below water level.
can someone list a few items and places to check for about what causing the issues. or do i need to small on the pump.
sump is pictured below. i still need to extend the emergency overflow down to below water level.
Last edited:
i have one inch plumbing for everything except a few pieces where the reeflo dart pump i have installed. i guess i have too much flow. lots of noise of gurgling and suction of air. when i partially close the output of the pump, i still have lots of gurgling and suction of air.
can someone list a few items and places to check for about what causing the issues. or do i need to small on the pump.
sump is pictured below. i still need to extend the emergency overflow down to below water level.
Are you establishing a full siphon in your primary drain line? Do you have a way to regulate it's flow? Ball or gate valve?
From where is the gurgling coming from, overflow box or sump?
Seems to me a DART is about 3600gph. That's a LOT of flow for a 1" drain line. IIRC a one inch will drain about 2200 on full siphon, or thereabouts.
TheFishMan65
New member
How far is the sump from your tank? I don't see a valve in there?
Is that sump outside - what about rain?
Is that sump outside - what about rain?
pelochas
Member
its outside, under the big patio roof. had too many issues with accidents so everything outside is best for me and maintenaance will be much better. building a table on wheels so that i can move it if needed to. planning to bug proof and anything else needed later. already had a small leak in the dart pump's intake, already made mopping and drying a breeze, none lol.
the tank is on the other side of the brick wall, so 5 to 7 feet head max. one ball valve, 4 of the 90 degree elbows and one 45 degree elbows before the return goes back in the tank.
i have a gate valve about 12 inches below one of the overflows bulkhead
if needed to i will exchange the dart for a mag 5 i had before this project
from the overflow. its a lot of flow but i can reduce it on the valve.
question. one bulkhead should have a "siphon" flow correct? other bulkhead should have a small flow for any extra overflow correct. third is just emergency...
when i start up, the overflow box fills up to the 90 degree elbows and slowly draining. no real siphoning like a busted U tube. if i close the air valve, the overflow box fills up, then the siphoning begins. suction of water and air begins like a straw in a empty cup.
i open the air valve and it start to relax and full siphon is on the first with the air flow going full. the second drain is just there taking in water but slurps and noisy.
need to adjust somethnig or cut of drill something to stop the slurping in the second drain. the first drain sound an endless toilet flush. probably is too much flow??
thx for the help :fun4:
pelochas
Member
I got it!
I had to change a few things. Added teflon tape to the caps. Move the air valve to other drain. Made both drains in one area of sump.
As u see the dart pump output valve is at fully open and the drain gate valve is fully open. Its silent and it took a few seconds to set.
Thx everyone.
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I had to change a few things. Added teflon tape to the caps. Move the air valve to other drain. Made both drains in one area of sump.
As u see the dart pump output valve is at fully open and the drain gate valve is fully open. Its silent and it took a few seconds to set.
Thx everyone.
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TheFishMan65
New member
Don't forget to move the end of the air line tube into the overflow box. When/If it gets submerged that drain will then start to siphon.
TheFishMan65
New member
Oops congratulations. I was going to as for a picture of the Bean Drain tops, but you found the problem first.
Bean,
Add me to the list of people you have helped!!!! I have an Aqueon 120 Reef Ready tank. The stock overflows were challenging enough to quiet having the sump in the tank stand. When I moved the sump to the basement, it became impossible. Tried durso and stockman without success. The 120 has two overflow boxes, each with one 3/4" and 1" bulkhead in the bottom of the tank. This is traditionally setup with each 3/4" builkhead being a return and each 1" bulkhead being the overflow. I now use all four as overflows, one siphon in one overflow box, the remainder of the water drains through one bulkhead in the other overflow box. The other two bulkheads are setup as safety overflows. I have my return going over the top. Silent after 1.5 years!!!
Thanks again.
Add me to the list of people you have helped!!!! I have an Aqueon 120 Reef Ready tank. The stock overflows were challenging enough to quiet having the sump in the tank stand. When I moved the sump to the basement, it became impossible. Tried durso and stockman without success. The 120 has two overflow boxes, each with one 3/4" and 1" bulkhead in the bottom of the tank. This is traditionally setup with each 3/4" builkhead being a return and each 1" bulkhead being the overflow. I now use all four as overflows, one siphon in one overflow box, the remainder of the water drains through one bulkhead in the other overflow box. The other two bulkheads are setup as safety overflows. I have my return going over the top. Silent after 1.5 years!!!
Thanks again.
LoneRanger:
You asked how to support the standpipes in your setup
Here is the easiest way to do it. The velcro straps are attached to the brackets with epoxy (screws could be used instead).
Savko, and others also sell plumbing support brackets that could be fitted to a wood extension.
holy crap, that is one bad a$$ setup. i have 2 pipes going on my back, and a big pipe that my media reactor is tied to going from the sump up to the tank.
that is one beautiful setup and tank btw.
Just want to say thanks
Just want to say thanks
Would like to say thanks to Bean and all the people who have contributed to this thread. Back in December I bought a 50gal tank to replace my 29gal and came across this thread. I believe I read the whole thing. Whew!! But from that I was able to complete my project and have it work just as it should. I had a few bumps, but a few re-reads answered all my questions.
I did a few things the experts may not like but the tank is DEAD SILENT and restarts perfectly. From the pics you can see it's not quite coast to coast. More like Vegas to Atlanta, but it works. I have two Eheim 1262 pumps. One is a closed loop the other is the return and sump/fuge. The flow seems pretty good. May get away without an MP10 or something. We'll see.
Just fresh water in it now for testing and I have a ways to go before it's really done and moved, but it's a great design, and thanks again.
Chasman
Just want to say thanks
Would like to say thanks to Bean and all the people who have contributed to this thread. Back in December I bought a 50gal tank to replace my 29gal and came across this thread. I believe I read the whole thing. Whew!! But from that I was able to complete my project and have it work just as it should. I had a few bumps, but a few re-reads answered all my questions.
I did a few things the experts may not like but the tank is DEAD SILENT and restarts perfectly. From the pics you can see it's not quite coast to coast. More like Vegas to Atlanta, but it works. I have two Eheim 1262 pumps. One is a closed loop the other is the return and sump/fuge. The flow seems pretty good. May get away without an MP10 or something. We'll see.
Just fresh water in it now for testing and I have a ways to go before it's really done and moved, but it's a great design, and thanks again.
Chasman
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rayn
New member
Hey all, I have a question on this system.
I built a c2c in a 4 foot 120 in august of last year. It has worked wonderfully for me since day one until two weeks ago. I did my normal water change and turned almost everything off including the return pumps. Overflow drained out as usual, but when it restarted it filled up and ran into the emergency drain. I unplugged and drained it again, then all was good.
Tonight I got home from work and hear this horrendous gurgling sound. At some point today the overflow quit working and it took the emergency drain to keep from flooding the room. Very glad it was there and worked like a charm. I tilted the two 90° elbows a touch and now everything works again like it should.
I suppose this is a short term fix, so why the sudden change in the way it works?
I built a c2c in a 4 foot 120 in august of last year. It has worked wonderfully for me since day one until two weeks ago. I did my normal water change and turned almost everything off including the return pumps. Overflow drained out as usual, but when it restarted it filled up and ran into the emergency drain. I unplugged and drained it again, then all was good.
Tonight I got home from work and hear this horrendous gurgling sound. At some point today the overflow quit working and it took the emergency drain to keep from flooding the room. Very glad it was there and worked like a charm. I tilted the two 90° elbows a touch and now everything works again like it should.
I suppose this is a short term fix, so why the sudden change in the way it works?
TheFishMan65
New member
Is there any build up in the pipes or by the valve.
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