Scubadawg's 187 Gallon Tank Journal - Edmonton

[scubadawg]

Thanks Sphelps

From my understanding I need 2 of these, one with a hole on top drilled and fitted with a pipe, the primary is a complete siphon, how low should the pipe be?

I just turned the pipe towards the outside for a better photograph

FYI: the other side I have a ball valve, the open stand pipe is in the center, because I cannot reach the center once the tank is in place

[sphelps]

Nope that's not what you want. I'll draw a little picture for you in a sec.

[sphelps]

This should be more clear, it's basically beananimal which is a herbie overflow with an extra drain and a standpipe.



You can set the operating water level height by the height of the standpipe, it's low in this example but it gives you the idea. See previous durso image for standpipe details.

[scubadawg]

Originally Posted by sphelps

This should be more clear, it's basically beananimal which is a herbie overflow with an extra drain and a standpipe.



You can set the operating water level height by the height of the standpipe, it's low in this example but it gives you the idea. See previous durso image for standpipe details.

Thanks
In the original way I have it setup is exactly as your diagram except my left tube, I have a straight pipe like the right side, I do have a ball valve there, you can see it between the 2 unions, so basically I just need a T fitting for the durso.

[Werbo]

Tagging along.
Sphelps you drawing is excellant and answers many of my questions. Thx.

[sphelps]

Originally Posted by scubadawg

Thanks
In the original way I have it setup is exactly as your diagram except my left tube, I have a straight pipe like the right side, I do have a ball valve there, you can see it between the 2 unions, so basically I just need a T fitting for the durso.

Yeap that's cause I drew it up just for you. The ball valve won't serve much purpose but it's already there so no point taking it out. Just watch your heights, the primary needs to be a decent amount below your operating water level to prevent a vortex and your back up can't be too high either otherwise it won't take the full flow. Things look a bit high in your pics but its hard to tell.

[scubadawg]

Originally Posted by sphelps

Yeap that's cause I drew it up just for you. The ball valve won't serve much purpose but it's already there so no point taking it out. Just watch your heights, the primary needs to be a decent amount below your operating water level to prevent a vortex and your back up can't be too high either otherwise it won't take the full flow. Things look a bit high in your pics but its hard to tell.

In the photo of post 26 could I just drill a hole instead of using a T fitting? and put a valve there,or is it better getting a T?

Thanks
Yung

[FishyFishy!]

Originally Posted by scubadawg

In the photo of post 26 could I just drill a hole instead of using a T fitting? and put a valve there,or is it better getting a T?

Thanks
Yung

Definatly use a T fitting with a cap on the end. Think if this drain as a Durso style pipe. You'll want the air space above the water flow. Drill a hole in the top of the end cap, and put an air line/valve in the top to control air intake.