I have been researching the whole thing (since feeling like such a bonehead for the past few days in trying to describe this equipment setup.)
The refusium/brinetank setup has been used as a brine hatchery...in the past. Only infant brine pass through the pump...and are induced into the system automatically.
Now I'm probably gonna be off on another tangent becuse the "REFUSIUM" is in all actuallity a 30 gallon tupperware container which has held all the sumps etc......"I" want better for "MY" project !! Everything I inherited is all "the"-kind...except that. Now that I'm understanding more and more about SYSTEMS I'll be disposing of areas where ever alittle 1/2 stepping may have been accepted by any previous owners. Weeeeeeeeeee !!
I "AM" having fun though !! Thankx Guys !!!