bracket on the top of the tank

[4lti7ude]

If its a solid plastic piece then its for supporting the tank, but if its a thin flimsy one then it doesn't do anything I believe.
The sturdy ones shaped at the top for two small glasstops.

Removing the whole black top part tho is kinda sketchy...I don't think you could to that without messing up the strength of that tank. Even if you build another one.