Castorcrap:

I treat mine just as I do my other Jades. Mine is about 13 inches now and my largest conventional Jade is about 22 and still going strong. I have also seen much larger specimens. I see no reason to think that the tubular variety (gollum) would be less vigorous. Here is a link I found.

Norm

Here is a link that might be useful: Gollum Jade