Thanks
Unfortunately it doesn't matter. But in my experience the torch does much better higher in the tank.
If you can find a spot for it pull the rock out and drill a hole into the Rock and insert the skeleton. That way you won't have to worry about it falling over. Also if you can place it under a power head, the upflow will pull the tentacles up like the one in my picture. It will give it a nice sway. Just try and give 5 inches or so from the power head.