"gaijin" wrote in message
...
Sounds like you are confused between a refugium and a sump.


The LFS puts LR in some of their sumps and not in others. I always guessed
it's because they don't have enough LR to go around. I'll ask the next time
I'm there.

I looked at refugium, in the dictionary, and an aquarium along with it's
sump, could be considered a reugium. But you aquarium guys may have a more
esoteric meaning for the word.

In a false back Bio Cube, the LFS uses only LR as a filter. But that
aquarium is full of LR.

Jim