I'm just stumbling across this idea. As far as "gripping power" goes, doesn't that have to do with how tight the baffles fit in the first place? Wider baffles = more pressure = more gripping power, no?
And when you talk about force from the water column, are you talking about force from the water flowing from one area, through the baffles, to the other? Seems like with water on all sides, the pressure would be fairly low... assuming you didn't have super high flow through a relatively tight space.
Lastly, has anyone verified that this stuff is even reef safe?