Spray bar on return line from sump?

I'm looking at some Sumpfugium designs and came up with some questions.

What are the benifits of a spray bar on the end of a sump return line Vs. just a nozzle?
What are some good, cheap, one way valves available to prevent reverse flow?
Does a bubble trap matter if the water is flowing thru lots of macroalgae?

 

I have/use spray bars in my system and I love it. You can point each "nipple" towards anywhere you what or need to. Eliminates the need for extra pumps inside the display tank to create the water flow. Some ppl dont like them but I do. If your going to have a refuguim, you will need a slow flow. They sell one way check valves to prevent the reverse flow on the main pump when elec. goes out.

 

home depot sell any plumping good for aquariums?

 

I had the spray bar on my tank for awhile but took it off. I didn't like it as much as I thought I would.

 

the line going into the sump is a drain with no pressure. spray bars work under pressure
there arent any cheap good one way valves, marinedepot or dr. foster can help
whats a bubble trap?
fuge and sump is best left seperate, imop

 

Should have most everything you might need.

I have used CustomAquatic in past for most plumbing needs...