What is a Refugium???

[ncoastconstceo]

What is a Refugium and what do you use in it???? :thinking:

 

[zanoshanox]

its another small tank linked to the display tank which is used to grow beneficial organisms such as pods, microalgea, and other animals that are too small to defend themselves from predators. The algae helps absort unwanted nutrients that can cuase algae blooms and unsafe levels in the system.