I can try and recover it for you if you want. I'm only home today until 5:30pm then I have to go to work but I should be around all of Saturday and Sunday.
Gutter guard is pretty good stuff. Its thin and lite so it wont block nearly as much light and flow as egg crate. The squares are 8mm which should be too small for the average aquarium crab. The only problem is its an algae magnet.
This is a mushroom basket I built a little while ago to give you an idea.
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