A friend just gave me what I think is a 30g Breeder (36*18h*12d) and Im putting my frogs in it. I will be making a foam background like my last tank and that will also be half water with the plexiglass divider. My questions are since it is 3ft long it has that black brace in the middle. Is there anyway to remove that so its not in the way while Im foaming? Also there is some brown what im assuming is algae on it that has dried since the tank was emptied. What is the best thing to remove that?

Thanks