[jgriffin]

You can try that light. I have grown some very far from lights. They look etiolated, but look somewhat like they do in nature. I prefer more light. It gives it a little color and makes the tentacles very dewy.
Are you growing a Heli succesfully? If that is the case, you should be able to grow these. I would go with pure sphagnum.
The other stuff sounds interesting.
Cheers,

Joe