Hello,
Apex DOS 2014 and 2015, I have been using these for two part + magnesium dosing during the last two years, 100 ml per day. never did water changes. Lubricated the heads and are ready to go. Will take $400 including shipping and fees for the two DOS units.
Apex DOS 2014 and 2015, I have been using these for two part + magnesium dosing during the last two years, 100 ml per day. never did water changes. Lubricated the heads and are ready to go. Will take $400 including shipping and fees for the two DOS units.

