Hi,
Recently upgraded to a Profilux so am selling my Aquacontroller complete with everything necessary to run a pretty sophisticated system. It has been running almost all aspects of my 135g w cal reactor, chiller etc.
Comes with backlit Pro unit, temp, ph and orp probes all functional and within tolerances, calibration solutions, and about 20 or so X10 plugs, although I know that a couple of them were not functioning, as well as several variable modules for moon light etc.
If the buyer is local i will spend an hour or two helping set up the unit as it is quite simple after having done it a bunch, saving you any frustration and making sure your tank is looked after.
i'm thinking $200 but am open to partial trades of reef suitable livestock.
i've put in a link on a writeup - note though that mine is newer and doesn't have any issue with calibration as apparently this article indicated the earlier models had.
http://www.mv.com/users/besposito/aq2.html
Shane