Tank Devider

[Werbo]

Don't ever put a clown goby in a sps tank!! Now i need to catch a 1 inch clown goby.

What would be a good, safe and cheap tank devider? Egg crate is too large of a hole. Need something 24x24 that won't scratch the glass.

Luckily my tank is BB. I have 3 islands in my DT. Plan is to devide off 1/3 of the tank where the goby is, remove one island and catch the little SOB.

Thanks