Silicone sand to bottom glass

[Ruth]

I had thought about doing that at one time but when I really started to think about it I changed my mind.
If you think about it the sand you silicone on will only be nice and white for a very short while then it is either going to:

- get covered in coraline
- be a good place for crude to stick to as it settles to the bottom of the tank
- be a great foothold for hair and other algea to get a good grip on
- be harder to scrape crap off of than a flat smooth surface

I don't think you will be able to create the austetics you are going for this way so IMO you should either go with a sand bed (deep or shallow) or bare bottom.