Refugium Plumbing

[jallen32c]

I am setting up a 20l with a 10gallon refugium. I am going to run a 350 gph overflow and a mag 5 return. My question is on the plumbing. THe mag 5 has a 1/2 mpt outlet. Should I run 1/2" pvc or increase size? If 1/2" do they make a 1/2" ball valve? My head ht is only about 2' so I should need to return some water from the mag back to the refugium.

 

[rcoultas]

They do make 1/2" ball valves if you want to throttle it back - you could also split the return into multiple inlets to increase the directional flow in the tank similar to the job of a powerhead. In one of my tanks I split the inlet four ways to increase surface agitation and eliminate the dead area behind the rockwork.