The controller that comes with the WP40's has a ELSE mode on it for somewhat random waves, but from what I've read it isn't actually random but a set ramp up/down and if you plug in/power 2 at the same time they will follow almost the same random pattern, which may or may not be issue depending on what you're trying to accomplish. If you have a apex controller you can use 2 variable speed ports with 2 modified Reef Angel cable and have completely different profiles for how the pumps are run to your own desire
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