^ I can tell you that the moss under the center brace is almost completely dead. I was basically frondless (stringy) when I moved it. So if you stick one at that area, turn frequently! The good thing about this method is the fact it wants to grow toward the front. The other way, it was growing in both directions and did the same thing. The paper clips might help with fish not getting trapped behind there. So far, it's not been an issue, but when I put in the guppies for the winter, I could see this becoming one. I'd offer to send you gutter guard that I have left over, but it is sooooo cheap, you'd probably spend the same amount for shipping versus buying a new roll.
Good luck and let me know how it does for you!
Without Algae, death of mankind would be inevitable.