The ECU is electronic control unit. In other words the brain. According to the electrical schematic connector C410 pin ten is the wire you cut. If you cut it make sure you leave lots of wire on both sides to make repairs if that takes the power away from all lighting.
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I believe Reefkeeping is not a hobby but a way of life It's unfortunate mine is at a stand still!
Building a 135 reef 9 years in the making(seem like I'll never get this 1 together! Too Busy with the Nano and Pico tanks
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