Sand beds: What do you need and why.

[o.c.d.]

I have ran a DSB for over 7 years, 6" to bare glass in some places(Due to clownfish). Over the years I have vac small areas but other than that I don't touch it. It produces food for my copperband and mandarin who both pilfer through it on a constant basis. I would attribute no problems from the large amount of flow that crosses over the DSB then is pushed up in the water column. My 2cents