Bullhead??

[Lambianz]

Learned something new today about my high end external pump and my bulkhead.

? Which way is the bulkhead going to your external high end pump.
Like straight in to you sump or what?. Like it comes from pump to bulkhead to sump then whats after that in the sump.

Of course this process that was happening may not happen with people with big tanks and big sumps. I actually have similar but small, much smaller scale same set up as the beautiful Tank of the Month in here, Reef Central.

 

[SDguy]

Not quite sure I know your question (is there even one)? Are you asking which side the flange is on (inside or outside the sump)?

 

[Lambianz]

Sorry that was suppose to be bulkhead thread, Can MOD PLEASE Fix??
Thanks

 

[Lambianz]

Bulkhead

Bulkhead

No after bulkhead inside the sump where the water is being sucked into the bulkhead to the external pump? What is after your bulkhead inside your sump??

 

[SDguy]

A 90 degree elbow pointing down.

 

[Lambianz]

Bulkhead

Bulkhead

And why do you have your 90 degree elbow pointing down. I wasn't so fortunate to do that since I drilled to low. So had to add a fitting since my bulkhead is threaded. Then add about a 4" piece of pvc pipe with a cap. Then just cut out from centerline of pipe 30 to 45 degree slot about 2" long, facing down. But if just a straight in line bulkhead will cause a effect in the water and pull something back to the main display. What is that something and where does it come from?

Making this thread. Because as long as I been in this forum and others, and ask the ? why I was getting that something back into my display,
No one had a answer. And hoping this thread, will definitely help the new people understand what will happen if they have a high end external pump with just a straight in line bulkhead.

A strong vortex effect will take place, like a wind tunnel in the water and pull air from the top of the water line in the sump. Then when that happens, air bubbles, a lot of air bubbles return back to the main tank display.

Now maybe I've over looked this somewhere before. or maybe people think I read each and ever post, HMMMM NOT! But have ask ? before.

 

[SDguy]

Actually, I have the elbow there so that the sump can get extremely low (in an emergency) and still be able to pump water. I guess an added benefit, which I didn't even consider, is that the elbow prevents a vortex from forming, which, yes, would suck air into the pump.

 

[Lambianz]

Bulkhead

Bulkhead

Beautiful tank
Peter.

So your a Biochemist, do you have access to a lab where you can trace every element in a desired liquid? If so let me know

 

[SDguy]

No, we are not a chem lab, sorry