sump

[fishguyxd]

On my sump i have the intake pipe then there is a large baffle (with a couple bubble traps? ( pieces of glass) then the other large piece of glass where water fows under then to the filter floss and over it back to the pump. (sorry no pic at the moment)

My ??'s are how often should i replace the filter floss or be rinsing it out ?

also if i want to do a refuge what do I have to do. I have not found a lot of info on it or am not sure on it's setup??

please and thanks