I have a used Apex Trident. It’s been used for a little over 4 months however I don’t really need it. I have a 30G with LPS and only a few SPS. It works perfect I match it up to Hanna tests from time to time. I also have 6 months worth of reagents with it, it’s missing 1 of the calibration containers. Asking $600 shipped with the reagents, local pickup $550 located in SE Michigan