Herbie on a dual overflow.

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Sums24

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I'm currently upgrading my 72 bowfront to a 120 with dual overflows. I'm at the point now where I need to figure out my draining method. I've been doing a lot of research and I'm leaning towards the herbie method. My thoughts are to have one overflow with a siphon and a return and the other overflow to have a emergency standpipe that trickles and another return. Now I know that the stagnant water in the "emergency" overflow would be a problem. But what if I drilled a 1/8" or 1/4" hole in the bottom of the return line? I would think the water would circulate just fine with that. Can anyone find a problem with my theory ? I would love some thoughts before I go ahead with this.

Thanks for looking
Jason
 
sums24 said:
i'm currently upgrading my 72 bowfront to a 120 with dual overflows. I'm at the point now where i need to figure out my draining method. I've been doing a lot of research and i'm leaning towards the herbie method. My thoughts are to have one overflow with a siphon and a return and the other overflow to have a emergency standpipe that trickles and another return. Now i know that the stagnant water in the "emergency" overflow would be a problem. But what if i drilled a 1/8" or 1/4" hole in the bottom of the return line? I would think the water would circulate just fine with that. Can anyone find a problem with my theory ? I would love some thoughts before i go ahead with this.

Thanks for looking
jason
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i have a 180 with dual overflows , i have my 3/4" lines as my drains and both my 1" as " emergency " now i keep the water in my overflow boxes just below the 1" tubes , those are cut slightly below the overflow boxes .. I dont have an issue with any kind of standing water in my lines as no water gets in there unless their is a problem ?

Now my sump is in my basement and i get a ton of drain thru my 3/4" lines , those sit approx. 3-4 " below the top of the overflow boxes , it is not completely silent but i adjusted my return to keep the water level high enough in the boxes to keep it tolerable
 
Bowhunter4250 said:
i have a 180 with dual overflows , i have my 3/4" lines as my drains and both my 1" as " emergency " now i keep the water in my overflow boxes just below the 1" tubes , those are cut slightly below the overflow boxes .. I dont have an issue with any kind of standing water in my lines as no water gets in there unless their is a problem ?

Now my sump is in my basement and i get a ton of drain thru my 3/4" lines , those sit approx. 3-4 " below the top of the overflow boxes , it is not completely silent but i adjusted my return to keep the water level high enough in the boxes to keep it tolerable
Click to expand...

If I'm understanding this correctly. All of your overflow holes are being used for drains? Are your returns going over the top of the tank? If so, I'm trying to stay away from that because I have a rimless tank. Which would not be the best option for me. My sump is also in the basement. It's 55gl sump. Just to add a little more info my drains are 2- 1 1/2" and 2- 1". Thanks for the reply
 
Sums24 said:
If I'm understanding this correctly. All of your overflow holes are being used for drains? Are your returns going over the top of the tank? If so, I'm trying to stay away from that because I have a rimless tank. Which would not be the best option for me. My sump is also in the basement. It's 55gl sump. Just to add a little more info my drains are 2- 1 1/2" and 2- 1". Thanks for the reply
Click to expand...

Yes you are correct ... Sorry I did forget to mention that , my return line is 1 pipe ---1-1/2 diameter with 4 dual returns so 8 lock line jets and it comes up the back , I have a canopy on mine so you don't see any of it ..
 
That's probably not going to work for me. I'm still wondering if drilling a small hole will be enough flow in the overflow. Any thought on that?
 
sums24 said:
that's probably not going to work for me. I'm still wondering if drilling a small hole will be enough flow in the overflow. Any thought on that?
Click to expand...

i would think it would work to circulate the water that is in there, but if im thinking correctly , if there isnt a drain being used on that side ( only an emergency drain ) then water should fill that whole box and circulate with the rest of the tank ? The benefit of the whole in the bottom of the return line would circulate the water from the bottom of the box to the top
 
The drain being used on that side would have a trickle. So the flow from the hole would eventually make into the overflow drain. Did I explain this correctly. Sometimes I confuse myself:)
 
sums24 said:
the drain being used on that side would have a trickle. So the flow from the hole would eventually make into the overflow drain. Did i explain this correctly. Sometimes i confuse myself:)
Click to expand...

as do i .... Yes i believe you did explain correctly , i dont see why it wouldnt work
 
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