so i bought a marine color dosing pump for my freshwater tank to dose ferts. i calibrated, set time, set working time, and made sure the auto mode was on. the problem is it wont auto dose. i set pump 1 at 30 ml/day at 10 am-11am, pump 2 @ 9:00pm-10PM 40 ml day, pump 3 30ml/day at 2:30 pm-3:00pm. at the times its suppose to dose, i get nothing. not sure if im doing anything obviously wrong.