Aqueon 20 gallon long inquiry

[Confetto]

I want to take advantage of Petco's clearance sale on their 20L tanks. The ones in stock seemed to have thick silicone in all the corners & seems - is this common?

I have Aqueon 3 gallon rimless tank with very little visible silicone. Does it "disappear" when there's water inside?

[AllFishNoBrakes]

Agreed that they don’t “disappear” when water is added, but when I’m looking at my tanks I don’t really pay attention to the silicone. 
 

Where I do pay attention to it is before I buy the tank. I try to select the tank with the “best” silicone job. I’ve seen tanks that have it dribbled all over the viewing panels of the glass and I definitely don’t want to take the time to scrape it off. 

[Confetto]

Thanks for the replies.  Picked up the 'best' tank this afternoon and filled it to check for leaks. 

So far, so good!

[sairving]

My tank has silicone that oozed out when they put the sides together. I guess it won't leak? My lfs sells weapons tanks. The silicone work always seems neater.