Jill
Aquarium Advice Freak
It might cause a weak spot or water might start creeping in those areas, im not sure of the risks, maybe you can apply more silicone? Hopefully someone who knows about sealing tanks can help you out on here.
Yeah, peace of mind would be nice. I told my husband about it when I did it because I was concerned, but he didn't seem concerned at all so I didn't think much more about it until I saw the other thread.