Thanks Guys... great info here.

Found a foot valve

http://www.homedepot.ca/product/1-pvc-foot-valve/969288

Will be dry plumbing the tank on Friday or Saturday but got to move it into the fish room first.

Hopefully things go well.

Andy

I may consider using a Durso for your main siphon drain. The reason is, you will have stagnance at the bottom of the overflow. Using a Durso will create flow in the bottom, and all you need to fo it place a siphon break at the top (assuming your sump cannot handle the volume of your overflow. Secondly, I would use the emergency as a trickle, since protein will build up on the surface of your overflow otherwise.

What is the foot valve from Home Depot for? Strainer?

Thanks!

Keeps the pump primed