question regarding my 75 gallon aqauarium

[midnitdragoon]

I got it used, holds water great 2 weeks now. Silicone is only present where the glass joins. There is no vertical bead of silicone, although the bottom panel of tempered glass all have thick beading. Is my tank going to burst?
It looks like this pic
http://www.ultimatereef.net/uploader/2008Q3/ADA_Cube_Garden_FilletTop.jpg

Any help would be great! thank you!!!

 

[midnitdragoon]

also side note my tank has a top and bottom plastic rim, bottom plastic rim has a slight crack in corner.

 

[smitty03281964]

You say it held water for 2 weeks. I don't understand the worry.