concrete

[bald57]

Hi all I work for a concrete company. I have access to lots of chunks of that are very pourus . My question is if I scrub it really good and soak it for awhile, could I add it to my salt water tank without having any issues. I just acquired a 65 gallon tank and thought if it would work, I could make lots of cool looking ledges and caves.
any info would be appreciated. Thanks

 

[woody390]

I'm no expert on concrete but doesn't salt water corrode it?

 

[bald57]

not sure but I have seen threads where guys make rocks and displays out of concrete and cure it really well.