If I want to make a corner box in my glass tank to hide my HOB filter parts with black acrylic what do you suggest using to bond acrylic to glass? Black aquarium safe silicone or????? Also what is the best way to do this? I'm assuming I dont want an overflow (teeth just notched at top) since I want the inside of the box to be filled with same level of water correct? So would I need to put more holes in the box down lower?