Return line check valve?

[winland]

Go ahead Psychographic, give me your latest idea.
Always open to another suggestion.

 

[winland]

Hey Psycho... are you still out there?
What is your newest suggestions for my plumbing problem?

 

[winland]

Sorry for the quick sketch, I don't feel like playing with any of my design programs, it takes quite a while to draw this using them.

Here are a couple of photos of my plumbing that was completed today.

My initial concern is the weight/pressure that this PVC configuration will be putting on the glass with the water flow and weight of the water and PVC on the bulkheads.

 

[AZDesertRat]

You really need to support that piping with something other than the bulkheads or you will have differential pressure on the gaskets and leaks.
Am I correct is assuming you are relying on a single little airline which is suspended in the water to create an air gap on a backflow? Whats to keep it from plugging with a snail, food, fish or algae? I don't care for the design at all as its no better than driling a hole, in fact the drilled hole is a better option if its above the waterline.

 

[winland]

I finished my plumbing today and did a freshwater test on the tank and all of the plumbing connections.
I also did a simulated power failure to make sure my siphon break was working properly.
My return pump is currently a Mag 24 and I will be running an ASM G3 skimmer

ALL IS OK.

The setup is not perfect, but it works for me.
Thanks for all your help.