FYI, IO will be cutting their 200 gallon bucket down to a 160 gal mixed and charging the same. I obtained this info from my LFS owner. You made what to stock up on some before the switch.
Yes I just received 2 from them also, so I have a total of 4. But I will be using 2 buckets to start up my 120 from my 90 and converting my 90 to a FO tank.