4ft tank no brace

[SuperD14]

I have a 4ft Roma 240l aquarium without the centre brace. The whole top black rI'm was just resting on top the tank and the centre brace had been broken and screwed back together with metal screws which rusted. The goal for this was for the previous owner to put a foam 3D background into it. My question is this: since the tank didn’t have a working brace to start with for the two years I used it, will it matter now I’ve removed all of the top black brace?

 

[CoryBoi]

Here you go.

 

[SuperD14]

Here you go.

Thanks I’ll give it a look