Depth of sand without bacteria

[rvm]

At what depth does Anearobic Bacteria become a problem with sand substrates, and how often does it have to be stirred if you exceed this depth?

 

[Teelie]

About 2" and once a month if you get the sand deeper, though having burrowers elminates that need.

 

[CFC]

Just keep the depth of the sand below 2" and you will be fine, unless you have live plants a inch of substrate is more than enough.

 

[LadyMinion]

We have about 2.5 inches of sand in our community setup, that said, we also have two violet gobies who re-aquascape the place on a daily basis!