What refugium substrate should I use?

[russ13]

What is everyone putting in the bottom of there Fuge???
Rubble rock? Sand bed? Deep sand bed? Mud? Marinepure bio media ? Bare bottom?? What is everyone using and why?

 

[toomuch420]

Live rock cause thats what i had

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[gumbii]

are people using like reef cubes, or biocubes... i forgot what they're called.. and that's what i'm planning on using on my sump...

 

[Speaker73]

I'm planning on using siporax

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