gutter guard

Any DIY ideas from something i can build for my DT that i can keep my corals in so the fish cannot annoy them. I currently have the corals in something similar to the Cope-Pod using gutter guard, but the longnose butterfly seems to have taken a liking to my Colt frag inside the little cage. I...

I'm doing a c2c on my 100g tank. How to attach the gutter guard?? I know that is what most people are using to cover their overflows, but not sure how it's attached, especially to glass. This is what I bought but I'm not sure I bought the right stuff. Pictures would be helpful....thanks in advance.