I would have no problem replacing the bracing and rim if it wasn't siliconed to the top of the aquarium. How the heck do I get it off without breaking or chipping the tank if it's TOTALLY sealed onto the glass?
it will actualy just peal right up if it gives you a hard time run a pudy knife on the inside and outside of the frame and thatl loosen it up the clean it well and resilicone the new one on