Originally Posted by emerald76
Hang on back refugium (because I want a gold headed sleeper goby)
Aragonite sand. Enough for a sand bed 2-3 inches because I want a gold headed sleeper goby.
That goby likes to sift sand through its mouth and gills. So a nice sand bed will be a good thing. A refugium is suggested because it will help keep up a good population of Copepods and ampipods for the goby to eat.
Also having a lighted refugium will help reduce any ph swings that might occur at night when the display tanks lights are turned off.