I am 99% done switching the 300 over to the 210 and I have quite a bit of LR left over. Its a mix of live rock from all kinds of different people on here, as far as I know its all pest free except aptasia here and there. It probably won't be live for very long as iits in my smaller tub right now (had no other room) so come and get it!! I'm in FOCO and its been in my system for about a year, some of it moved from system to system so could be around 3 years old. Again, different sizes and shapes ranging from big pieces to rubble pieces for fuges. Ill be using a small amount of this for my fuge.