!?!?!?!

[avalanche1201]

I've been designing a custom cube tank, the renderings can be followed here

 

Anyways, I want to change the design a little bit and use an external durso instead of an internal one...the return from the sump will be a mag 9.5

 

now the question is, how large and how many dursos should I have that will help keep up w/ the return from the sump so it doesnt run dry? Any help is appreciated, thanks

[joesmoe517]

i dont know much about this kind of stuff but technically unless you underfilled the tank before beginning, the pump wouldn't just "run dry" your main tank would overflow, or no?

[shag26272]

how many gallons is the tank? Is the mag your only source of flow? I would look at the oceanrunner pumps they use way less watts and produce alot less heat. A 1 inch bulkhead will drain 600 gph You will need a 1.5 in.

[avalanche1201]

no it wouldnt be my only source of flow...ill also have a mag 9.5 closed loop system...around 20 gals.

 

 

so im looken at 1.5" or two 1" externals...thanks shag

 

ill whip up the renderings tonight i hope

[Maeda]

I would plumb 2x 1"

 

Redundant plumbing is always a reallllly good idea. Overtime stuff will get stuck and clog the pvc.

 

and use a lower gph for your sump return. Any reason WHY you want such water flow through the sump if you're going to have a closed loop?

 

Plus if you have 2 huge overflows you'll cut down a lot on noise.

 

and please do yourself a favor and use an external pump for the closed loop like a panworld/iwaki/sequence.

[avalanche1201]

it is going to be an external pump..it will be an external mag 9.5

 

the sump might not be a 9.5, depends on the stand I use...still not sure if im going to build a stand or find something

[Maeda]

When I say external I mean REAL external. Not internal pump with the ends capped for pipes.

 

IF you insist on using a mag, watch out for head pressure on it. It will cause it to leak.