Refugium Flow Rate

[TheReeferer]

For my build I ended up going with a 40 breeder and a 5 gallon CPR hang-on refugium (Large model). My question is what is the ideal flow rate for such a refugium? I'll be using it primarily as nutrient export via algae.

 

[landonmcq]

For my build I ended up going with a 40 breeder and a 5 gallon CPR hang-on refugium (Large model). My question is what is the ideal flow rate for such a refugium? I'll be using it primarily as nutrient export via algae.

Totally depends what's in the refugium,

 

[TheReeferer]

It'll be filled with chaeto.