I was thinking maybe making it a "combo" cooling device. I like how compact you made the whole sump unit and maybe to increase the cooling capcity more by putting the peltier in contact with the outflow. So one of those iCA nanochiller or "ice probes"... they're small and can be controlled with a Neptune... not sure how much more effective it would be, but wanted to see if you have any experiemental info/data on it.
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