So I'm wondering if anyone has done a notched external overflow on a 120 rimless I've been thinking about upgrading my tank an really don't like overflows inside the tank I just think it looks horrible an also don't like how it takes up space inside where beautiful corals can be but what worries me is notching a rimless will it weaken structure cause there is no center brace I really wouldn't like to have a blow out especially on a 120

