Building a 30g rimless tank 24x24x12 3/8thickness getting the glass from http://customglassny.com if you guys know of a cheaper place do tell, any way I'm looking for a step by step guide on how to siliconing the glass together, as I'm not sure how to do this is it bottom pane then front back and sides warp around the bottom or is it bottom pane and front back and sides sit on top the of the bottom pane?, beveled edges how many inches should I make it Thanx in advance