That's not gonna work. The Meanwell LDD-H requires a 5V PWM signal for dimming, not potentiometers. You'll need to remove the pots and connect an Arduino, Typhon, StormX, or some other controller that provides a 5V PWM signal.
225 Gal, Glass "Reef Ready" w/ twin Iwaki Pumps & 2 Ocean Clear inline filters. Custom 420 watt LED Lighting system utilizing 90 Cree leds, 3 -50watt BridgeLux arrays, "Typhon" LED Controller, and a 20lb CO2 system w/ Milwaukee Ph Controller.