I've got two Tunze Nanostream 6055's (https://www.bulkreefsupply.com/tunze...trollable.html) hooked up to my Apex but there seems to be a problem. They only operate at one speed no matter what I program into the Apex. Then I noticed this speed is the same that the main power on the Tunze is set to. While hooked up to Apex I could manually control the Tunze speed up or down from the Tunze controller. But regardless of what the main power setting was on the Tunze I could not modulate the speed from Apex programming. Anyone else have this problem? I can't find it anywhere online.
Yes, the Tunze controller is set to external control.
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