I have a Marineland 180 with the Black Silicone. I originally had a AGA 180 but it was chipped bad when it was delivered. Long story short, the LFS replaced it with a Marineland 180. I am still nervous about it but I just made sure that the iron stand I bought was perfectly level every way. The tank has been up for two years and I haven't noticed any separation between the panes...Hopefully it stays that way
