Adding dry rock?

[MarkoD]

Originally Posted by fishytime

you should be able to add as much as you like....marco is deader than dead can be..all organic matter is long gone......the only thing that should come off it is dust.....just remember not to count it as part of your "live" rock for possibly up to a year......

what do you mean a year?

i havent had my 180 gallon up for a year yet and it started off with 50 pounds of live rock and 150 pounds of dry rock

after about 2 months the dry rock was completely purple....

why would it take a year?