问题
What exactly is the difference between a “sump” and a “refugium” (assuming there is a difference)? These are terms I didn’t hear in my 30-plus years as a freshwater aquarist, but I’ve heard them numerous times since starting my first saltwater tank.” – Submitted by Moira B
回答
There is a distinction between a sump and refugium in marine aquarium hobby parlance, but sometimes there’s a degree of crossover between these two systems that can make it difficult to tell where one ends and the other begins. Let’s try to define each, and then briefly examine why they sometimes defy easy categorization.
污水定义
一个污水是一个单独的（但被置于系统中）的储罐或水库，位于水族馆水平以下，通常用于容纳各种救生设备 -蛋白质撇油器，加热器等 - 因此，它不会损害显示器的美学。一个集团还提供了增加整体系统水量的额外好处。
定义了备用
储备也是一个单独的水箱或水库，该水箱被置于水族馆系统中，但其目的是非常不同的。从本质上讲，避难所提供了一个安全的地方 - 避难所，如果您愿意的话 - 在哪个原因或另一个原因中隔离生物。
例如，业余爱好者可能想创建这样一个环境以培养微局部（例如Amphipods和Copepods），增强系统的生物过滤能力活岩硝酸/砂,macroalgae增长为目的的reduction or feeding herbivorous fish, isolate injured or bullied specimens, or house interesting hitchhikers that may not be welcome in the display tank. I suppose one could say that a refugium usually enhances the biodiversity of the system in some way.
线模糊的地方
Salty问答：污泥与备食相同吗？但是正如我上面提到的那样，有时候，污水和灌注量之间的区别有些模糊。例如，许多业余爱好者都使用多校区的污水池，其中一些隔间持有设备，而另一些则用作Refugia。同样，即使是一个相当“无菌”的，严格的功利主义物质最终也可以在一定程度上起作用。If you look closely in my 29-gallon sump, especially at night, you’ll see a thriving population of pods and mysid shrimp (the latter were originally introduced several years ago as a live fish food)—probably because I’m lazy when it comes to siphoning out the detritus that settles there.
