Floaters

Thanks for the pics JP, those helped alot! The vals do what I was thinking, and trying to describe wonderfully! Seeing the pennywort, I think that might do what I want even better than what I was trying to do. I always thought pennywort stayed low... lol. How quickly does it grow? Does pennywort do best planted directly in the substrate, or attached to something?
 
So, just to make sure I am seeing this right, pennywort will pretty much grow up, until it reaches the surface, and then it will pretty much grow sideways? Or does it just grow up, and will only spread on the surface as much as it has spread on the bottom?
 
Cool. I think the pennywort will be perfect. Not what I thought I wanted, but I think it will be even better.
 
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