Me Mantis? ..umm..no. Have all the stuff but haven't gotten around to building the replacement one for the 75. I'm still using the original one made with the aluminum edging. It's on my to-do list..way near the bottom.
The acrylic/mesh cover I made for the cube is holding up very well even though it sits about 10 " under my MH.
I do have more mesh if you want to try this type cover Mantis..PM me if you want some.
btw..haven't lost a fish since I added these to my tanks and they are 'soft' enough that even if a fish soes jump he just bounces off instead of klonking his noggin on something hard...