I have tons of sandstone lying round, I have a couple huge piece's that i would love to put in my tank but i dont know if they're safe or not, and if it will colour up like my other live rock?
Most of it was collected by my brother at the shore over the years. But how on earth do you break this stuff, I've tried jackhammers, dropping it outa my window, have broken about 3 hammers on it, and it just breaks small little pieces of.