Originally Posted by
spanko
http:///forum/post/2493860
I thought it was base rock. Will it get coralline on it?
Oh yeah totally..... And if combined correctly with LR, would probably make a sweet cave network!
(Disclamer: PRK543 does not claim to be an expert on concrete block chemical composition and its reaction to a saltwater environment. Prk543 is not responsible for losses to tanks/livestock/equipment due to experimenting with Concrete block as a base rock. If experimentation is successful, PRK543 will totally take credit for the idea.)
(apology: Prk543 is sorry for hijacking your thread.)
On a serious note, I really think that your tank looks good, and I will probably steal your idea/aquascape when I set up a tank on my desk at work