Ok, here's my experience this week with this pump and a certain online vendor.
I recently ordered the Aquamedic Reefdoser Twin from Marine Depot. It arrived yesterday via UPS ground, and today I went to set it up. I spent an hour and a half mounting it above my sump, cutting and running the tubing for both channels to dose 2 part calcium and buffer solution in my SPS tank. I get everything set finally and begin to program the unti only to find that the second channel will not pump any fluid. I tried replacing all the tubing to no avail, and swapped the tubing from channel 1. Nothing worked. Apparently the santoprene tubing must be bad as I tried swapping them out ( left for right) and then it worked.
So I call customer service at MD only to be told that my options are to send it back to them, AT MY EXPENSE, they will test it and determine if I should get a new one, or they can charge my CC for another and ship me a new unit now, then I can return the bad unit for credit. Either way, I am dishing out money that I shouldn't have to. I paid for a brand new unit, and got a defective one. The burden should not be on me. I should have listened to people on RC and gone with Premium Aquatics. Lesson learned:mad2:
Needless to say, I will be returning this unit for credit, and will then make the purchase elsewhere.