solitude127
Proud user of IO Salt!
If I saw correctly in your sale thread, you have 2 drains in the o/f box? If so, you may consider the Herbie method. IMO, it's much quieter than durso.
LF: Aquarium Plumbing Expert
- Thread starter nguyenmi
- Start date
nguyenmi
New member
Yes sir - there are two drains. Let me Google on the Herbie method. Thanks for your help.
solitude127
Proud user of IO Salt!
Here's the thread. I also PMd you back
http://www.reefcentral.com/forums/showthread.php?t=344892&highlight=herbie+method
http://www.reefcentral.com/forums/showthread.php?t=344892&highlight=herbie+method
Herbie
Yep,that one
nguyenmi,
Just post a picture of the overflow you have in this thread, it will be a lot easier than through p.m.'s.
If you have a siphon "hang on" type overflow either Bean or Herbie over flow is very highly NOT recommended. I have done LOTS of testing on it, even had some custom Lifereef overflows made to my specs. In the end, although they were quiet, they were not failsafe. Its a physics thing, as the water rises on the overflow box simulating a clogged drain the syphon slows down (the pump does not!). As the water gets close or the emergency overflow, the water flow through the siphon tube almost stops completely. It wont get air in it and stop, it just wont flow any water because the water level is too high to produce a proper siphon. Then the tank will slowly overfill with water.
If you have a built in overflow box with bulkheads, we will have something to work with. If you have a hang-on overflow box, it is not recommended to go with a "tuned" main drain.
Herbie
Just post a picture of the overflow you have in this thread, it will be a lot easier than through p.m.'s.
If you have a siphon "hang on" type overflow either Bean or Herbie over flow is very highly NOT recommended. I have done LOTS of testing on it, even had some custom Lifereef overflows made to my specs. In the end, although they were quiet, they were not failsafe. Its a physics thing, as the water rises on the overflow box simulating a clogged drain the syphon slows down (the pump does not!). As the water gets close or the emergency overflow, the water flow through the siphon tube almost stops completely. It wont get air in it and stop, it just wont flow any water because the water level is too high to produce a proper siphon. Then the tank will slowly overfill with water.
If you have a built in overflow box with bulkheads, we will have something to work with. If you have a hang-on overflow box, it is not recommended to go with a "tuned" main drain.
Herbie
Paul_TheOctopus
New member
nguyenmi
New member
Here's the built-in overflow box by LeeMar. As you can see, the overflow box was built inside the tank and does not extend to the bottom. The overflow box attached to the right Penninsula side.
You can see there are three holes drilled inside the overflow box for drainage and return.
The overflow box dimension is 20x4x6.
You can see there are three holes drilled inside the overflow box for drainage and return.
The overflow box dimension is 20x4x6.
Attachments
rroselavy
Premium Member
You can still do a herbie on this overflow. Inside the overflow box, one bulkhead will have an elbow pointing straight up so the open end of the elbow is about level with (or slightly lower than) the bottom of the overflow teeth, and the other bulkhead pipe would be fully submerged (with or without a strainer).
Above the sump, the submerged drain will have a gate valve to control the back pressure of the siphon. The gate valve should be adjusted so water just barely (just a trickle at most) comes down the second (emergency) drain.
Correct?
Herbies are prolly the simplest to plumb.
Above the sump, the submerged drain will have a gate valve to control the back pressure of the siphon. The gate valve should be adjusted so water just barely (just a trickle at most) comes down the second (emergency) drain.
Correct?
Herbies are prolly the simplest to plumb.
rroselavy
Premium Member
Herbies original thread: http://www.reefcentral.com/forums/showthread.php?s=&threadid=344892&perpage=25&pagenumber=1
rroselavy
Premium Member
The leftmost drain with the gate valve in the diagram is the drain that is fully submerged so it is acting as a siphon. The gate valve controls the speed of the siphon. This siphon drain performs almost 100% of your draining.
The rightmost drain is the trickle (emergency drain). This has no valve.
When the gate valve on the siphon drain is adjusted, the water level in the overflow will rise until it starts to drain through the emergency drain. You are supposed to adjust that gate valve so that only a trickle is overflows into the emergency drain.
The result is a virtually silent overflow with an emergency drain in case the siphon drain becomes clogged.
The rightmost drain is the trickle (emergency drain). This has no valve.
When the gate valve on the siphon drain is adjusted, the water level in the overflow will rise until it starts to drain through the emergency drain. You are supposed to adjust that gate valve so that only a trickle is overflows into the emergency drain.
The result is a virtually silent overflow with an emergency drain in case the siphon drain becomes clogged.
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Herbie
Yep,that one
Nice tank.
Like scott said......easy to implement a "herbie" style on that tank.
Left or right wont matter, but for explaining purposes......
Left side, DOWN turned elbow, always submerged. Plumbing WITH gate valve, exit of plumbing just under the water level in sump. In a filter sock or something.
Middle, return from sump pump. Through hole #4 in overflow box??? Thats a weird place for a hole though???
Right side, UP turned elbow, just a trickle of water flowing. NO gate valve in plumbing, exit some where in sump that will let you hear "water noise" if its flowing a lot of water.
Screens on both left and right elbows.
Thats it, pretty easy. Not sure what your doing with the closed loop hole?
HTH,
Herbie
Like scott said......easy to implement a "herbie" style on that tank.
Left or right wont matter, but for explaining purposes......
Left side, DOWN turned elbow, always submerged. Plumbing WITH gate valve, exit of plumbing just under the water level in sump. In a filter sock or something.
Middle, return from sump pump. Through hole #4 in overflow box??? Thats a weird place for a hole though???
Right side, UP turned elbow, just a trickle of water flowing. NO gate valve in plumbing, exit some where in sump that will let you hear "water noise" if its flowing a lot of water.
Screens on both left and right elbows.
Thats it, pretty easy. Not sure what your doing with the closed loop hole?
HTH,
Herbie
rroselavy
Premium Member
Herbie-
If you have a down turned elbow, wont that allow air bubbles to collect and eventually break siphon? I assumed you did not want any fitting that might trap air on that drain.
