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Are the pumps clean and otherwise in good condition? Basically we want to be sure the titanium shaft is rigidly fixed in the motor, the propeller assembly is clean and free of calcium deposits as is the inside of the motor. Does the power supply indicator light come on? Roughly how old are these pumps? Controllers started in July 2015, but these pumps have been made since 2008, in general DC pumps have a life span of about 7-8 years as that is a limitation of the electronics, the capacitors will not hold a charge reliably after they exceed that age. The main APEX issue I encounter is that the cables do not seat sufficiently, the rubber boot needs to be pulled back so the pins can make full contact, if the contact is loose, the pumps will not run or may run but not in response to the controller.
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Roger Vitko
Tunze USA
"He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!"
Current Tank Info: 210 gallon planted tank with Altum Angelfish
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