I have had my bow front tank up and running for 2 yrs now and just noticed that the person who had it before me cut the plastic beam in the middle out of the tank seen it today when was doing a water change cut very clean so never really saw it is it ok like that
If it's the center bracing... I would not consider that a safe tank at all. Bowfront tanks do tend to bulge in the center putting the silicone on the front glass under even more pressure.