Refugium Substrate

[Zoaelite]

Mixing mineral mud, live sand and rubble together should get you some pretty good results. I have a 27g upstream fuge that has about 6 inches of the stuff and the consistency is just perfect. My pistol shrimp/ goby form intricate burrows against the glass and my mangroves took root in the stuff instantly. I got my mixture from a LFS clearing out an old coral tank, just scooped up everything on the bottom of the tank, mixed in some mud/ larger rubble and your good to go!
Levi