good question, potentiometer is optional, you can just connect the driver wire directly to the VDM. I use the potentiometer to have manual control if I want to.
Dry fitted plumbing, I will cut the drain side less than 1 inch below water level, and ooops I realized the sump baffles got switch in the skimmer section. Anyway...can be fixed later. All drain are 1.5 inches in size while the return is 1 inch. I am just tired and crappy now
Tank has water with dry rock and this is a bare bottom tank. I will introduce ammonia via ghost feed and maybe the use of ACE Ammonia. Everything goes smoothly as there is no leak and overflow is quiet. Still need to adjust the return locline and install the flow eductor from my old 40 which is running too to keep my corals and fish until the 120 is ready.
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