single chamber cal reactor,10#co2,controller, and reg with electronic silenoid paid 650.00 all is new in boxes never used have new baby and no time to properly set up or care for a tank right now, this stuff has been sitting almost a year now and it looks as if i will never have the time NO CHEAPSKATES PLEASE THIS STUFF IS STILL WORTH WHAT I PAID BUT I WILL ACCEPT ANY DECENT OFFERS I also have a refractometer. i will not split it up take it all