Quote:
Originally posted by MontanaRocknReefer
I agree with above statements as far as LR being flat on the DSB as opposed to being off the DSB----don't see where it makes a difference!
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With a mature sandbed, there will no be problems with sand stirrers doing their job. However, there is an advantage to raising the LR off the sand bed in that it creates a refuge for copepods, etc., that would otherwise be predated by fishes, including mandarins and wrasses that may depend on them for their survival in some instances. I personally use rings of 6 " diameter PVC cut to the height of the sandbed, then drill 1" holes in the sides (all the way around) so that substrate moving creatures will be able to move through these vertical barriers in the sand. I don't do this for any reason other than creating the refuge for these benthic bugs. Some spp. of fishes and shrimps can use these as burrows as well.
Just my two cents (US)...