NewTank Plumbing Help

[pchromis]

Hello all,
This is my first drilled (bottom) tank with built in overflow and I am a little lost on how to plumb it.
I am in the process of a 95g reef build. 36x24x25.
I have no idea how to set up the overflow for drain to sump and return.
I have 1 1/2" drain and 1" return. I have the Schedule 80 bulkhead fittings.
Here's my questions....
Each bulkhead has one gasket. Obviously gasket side is inside tank...Any other precautions?
As for the overflow setup, I will use PVC, but what tube setup do I use for the drain inside the overflow? What height?
Any diagrams/thoughts would be appreciated.
I will be using an Eheim 1260.
Also, as for evaporation, does the display tank maintain water level while sump gets topped off?

 

[jetskiking]

I don't do anything but run the gasket if its in good shape. Look up a durso for the pipe on the inside of the tank

 

[pchromis]

Durso...I've seen that mentioned...thanks..

 

[habsfan]

Definitely do the durso setup. Very easy and quiet if you do it right. You can adjust how fast it drains too.

 

[spanko]

I don't have and never had a tank with an overflow down to the sump. However in my reading I found four examples of overflows that may help you.

Herbie Overflow
Diagrams courtesy of Matt Wandell

 

[pchromis]

Excellent...thanks all for your input and the diagram......

 

[pchromis]

Ok, Durso pipe done.
One question , i think it's possible a snail or to can make its way into overflow and then up the durso pipe...Should I worry about putting some kind of screen at the inlet?
I have 1 1/4 pipe drain.