Update: Neptune sent my DOS and DDR back to me yesterday by FedEx. I re-installed both early this morning and did the re-calibration, but I had to head to work and couldn't stick around to check if it was dosing at the proper times. This day can't end soon enough so I can head home and verify everything is alright!
Also, the new Bartlett's Twins are doing great, the rest of the tank has all introduced themselves and no overt aggression. I was worried about the other two larger square anthias and maybe the 6 line might get territorial, but my 6 line really could care less about anyone in the tank. Very friendly, which from reading the forums, is unusual.