After reading about this infortunate story, I went to check my tank and saw that the silicone joint is 1 millimeter wide at the top of the tank but grows to reach 3mm at the bottom. 
It's a 150 which is 2m/6' long and 60cm/2' high (on third floor in apartment).
Should I be worried or is it normal ?
It's a 150 which is 2m/6' long and 60cm/2' high (on third floor in apartment).
Should I be worried or is it normal ?