Advice on my sump plumbing scheme?

[rdmpe]

I'm planning a sump and fuge for a 180g. Looking for advice or improvements. Check it out here: http://archive.reefcentral.com/forums/showthread.php?s=&postid=5473472#post5473472 and let me know what you think!
~Thanks

[travis0712]

I am adding a water change sump to my system as well. I am placing it in my basement. The only thing I can say about your design is to ensure you use 45 degree elbows whenever you can as 90s increase head preasure greatly.

[Spuds725]

You can also use what are called sweep elbows-- these are gentle curve 90 degree elbows and would work better then 2 45 degreee elbows to accomplish a turn....

http://www.cornerhardware.com/item_219104/Genova/Genova/11/2-Pvc-Dwv-90-Degree-Long-Sweep-Elbow/item.html

here is regular elbow so you can see the difference

http://www.cornerhardware.com/item_219093/Genova/Genova/11/2-Pvc-Dwv-90-Degree-Sanitary-Elbow/item.html

You will have to look a little harder for these at a hardware store

[rdmpe]

I've seen those sweep elbows around the drain pipe stuff in the hardware stores. Those will be nice. I'll also be using spaflex where I can to help reduce noise and plumbing fittings...

[Entropy]

On your closed loop I would add a union on both sides of the pump, and a drain at the lowest point of the system, as well as a ball valve on both sides of the system so you can shut the ball valves, drain the line, service the pump, and reattach everything. You also need a port to add water to reprime the pump more than likely.