DIY Overflow Ver 9999

[dawnmarie]

Nice job , Looks good

 

[Dane]

Finally got it in the tank and going. Started up pretty easy. It is virtually silent as well. I have also discovered that the increased pipe size (2") seems to suck off the surface better even though it doesn't have any more volume than a 1" pipe.

 

[john73738]

Very cool sir,

I too will be filing this one away

Bear

 

[koop171]

What do you think the flow capacity is? I just build a DIY sump and I might need to steal this idea for the sump and I'm wondering if this will keep up with a mag 12?


P.S. where in ohio are You?

 

[Dane]

I would say that it should be around 600gph, same as any 1" overflow. I'm running a tetra 1200 from lowes on this one and a standard 3/4" one I did. However my plumbing is a little jacked up at the moment and I have some other changes to make before I see the full capacity of this thing.

I'm about an hour east of Cincinnati.

 

[Iffrat]

good news .. 2 would not look bad in the tank .. so you could always make another .. did you calculate how much the total was?

 

[Dane]

I plan on making a second one or I have another idea floating around my head that I may do. Total cost was about $35 but I have enough pipe left over for a second one and one or two extra fittings as well.

 

[Iffrat]

sweet .. i really want to build this .. and steal your design .. so i might ask a few more questions .. but i plan on having one of these in my tank soon

 

[Dane]

No problem. Here's some calculations if you want to do different sized pipe. Basically I wanted to make sure that the area left in the outer pipe was at least as much as the inner pipe.

Pipe Size-----Outside Diameter---Inside Diameter--Area Outside--Area Inside
1"-------------------1.315---------------1.049-----------1.35--------------0.863
1.25"----------------1.66----------------1.38------------2.16---------------1.49
1.5"-----------------1.9------------------1.61-----------2.83----------------2.03
2"-------------------2.375---------------2.067-----------4.42---------------3.35
2.5"-----------------2.875---------------2.469-----------6.48---------------4.78

----------------Area left
1" in 1.25-----0.137512375
1" in 1.5------0.677356875
1" in 2--------1.99646224
1" in 2.5------3.42788776

 

[Iffrat]

i think im going to do 1.25 inside because i have like 20 feet of it ..