The bacterial turgor that takes place in the LR is only in the upper few millimeters, isn't it? That's what makes me think that the bulk of the LR mass is saturated.
From what I can remember, if the rock is highly porous (or you are talking about a substrate like sand or gravel) the aerobic portion of the bacteria can be up to 1" deep. After that, the fauna turns to anaerobic... this wouldn't happen too deep in relatively dense rock.
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Calvin
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Planning a 29 gallon mixed reef...
07-05-2009, 06:45 PM
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