BB Bottom Guard???

[saltyreef]

Hey Guys,
I am just in the process of getting everything bought and organized to start up my tank. I am just wondering what I could use to cover the bottom to protect it from the rock or chance of a rock falling. I know that you can use starboard but I would have to drive to pick it up or ship it. I wondered if any one thinks that coroplast would work. I thought I could double layer it and you wouldn't even see it the edges for the trim on my tank. This stuff is cheap as heck and comes in clear/ white / or other colors. Here is a link to what it is. http://www.coroplast.com/ It is basically cardboard made out of plastic. On another note Do you think I could go wrong goin with a euro-reef RS100 for a 90 G with. Thanks for the Help and advice in advance.