Does flow rate matter through a refugium?
This again is a topic that has a lot of differences in opinions. I personally have setup refugiums with high flow rates and ones with minimal flow rates and, in my opinion, they both work … provided you don’t have a movement so slow things become stagnant in the refugium or movement so fast it literally blows the algae or sand out of the water. Generally speaking, a nice, moderate flow through the refugium will work just fine.
