"Harry Muscle" wrote in message ...

Does Mike Noren by any chance explain and detail how he made that
background, it looks really nice?

Not on the site, but I can do so he the background is made from
high-density PUR foam, by a company called Back To Nature. It is
extremely natural looking (even close up and in broad daylight one can
not tell that it's not real rock; I have some closeups I could post if
anyone's interested) but pricy, that background set me back $150.

I did experiment with doing my own PUR foam background, but since I
couldn't get hold of high density foam, only the standard bubbly foam,
the result was less than perfect. Also, painting obviously takes
artistic skill, which I do not have.

One advantage of a background such as this is that one can use the
space behind the background for a filter and to hide e.g. the heater.