if ya want pourous rock go with
5 cups of portland cement
1 -2cup of water
17 cups of oyster shells
or a little more water
make it like cottage cheese look and you have it there really easy
mike
__________________
180 starfire front, LPS, millipora
Doesn't matter how much you have been reading until you take the plunge.
You don't know as much as you think.
|