I believe it all depends on how much you want it to pulse really. I have some on my back wall that move higher and higher and is about directly in front of my it’s growing fine but it gets to much flow to ever pulse. Then the main colony is beneath my powerhead with minimum flow and will pulse all day long.
Can’t view the image, but mine seems to like moderate current. Too strong and it will wither away. (Trust me.) I would say as long as they aren’t constantly bent over you should be okay. I agree with the above, though, they do pulse more under lower flows.